Monday, June 1, 2020

Class 7 civics notes

Chapter 1:- On equality 

Topics to be covered:-
1. Introduction
2.Equal right to vote
3.Other kinds of equality
4.Recognising dignity
5.Equality in Indian democracy.
6.Issues of equality in other democracies
7.Challenges of democracy
INTRODUCTION:-
•India is a democratic country.
•It include people's participation, the resolution of conflict, and equality and justice.
•Equality is a key feature of democracy and influences all aspects of its functioning.
•so equality is a condition in which adequate opportunities are given to all. It is the soul of Indian democracy.
EQUAL RIGHT TO VOTE:-
•In a democratic country,like India , adults , irrespective of their religion, caste , education etc. are allowed to vote . This is called universal adult franchise.
OTHER KINDS OF EQUALITY:-
•Does equality exist?
-In reality, a difference exist between rich and poor.
-The caste system is also rigid.
-Dalits in India and the minorities are denied the right to dignity and equality.
•Dalit is a term that the so called lower castes use to address themselves. Dalit means 'broken'.
• Omprakash Valmiki is a famous Dalit writer. He wrote "Joothan".
EQUALITY IN INDIAN DEMOCRACY:-
•The Indian Constitution recognise every person as equal. This is not to say that inequality ceases to exist.
•This recognition of equality includes some of the following provisions in the constitution:-
First:-Every person is equal before the law.
Second:-No person can be discriminated against on the basis of their religion, race, caste, place of birth etc.
Third:- Every person has access to all public places including playgrounds, hotels, shops and markets.
Fourth:- untouchability has been abolished.
How has government tried to implement equality?
•Two ways
First :- through laws
Second:-through government programmes
•Tamil Nadu was the first state in India to start midday meal scheme(2001).
*Positive effects of scheme:-
-Help to reduce caste prejudices
-Dalit women have been employed to cook the meal.
-Help to reduce hunger of poor students
-more and more students get enrolled in schools for education.
ISSUE OF EQUALITY IN OTHER DEMOCRACIES:-
•In United States of America,the African-Americans continue to describe their lives today as largely unequal.
Rosa Parks , an African-American women, changed the course of American history with one defiant act.
•The Civil Rights Act of 1964 prohibited discrimination on the basis of race, religion or national origin.
CHALLENGE OF DEMOCRACY:-
•No country can be described as being completely democratic.
GLOSSARY:-
1.Universal adult franchise:-
This is a very important aspect of democratic societies. It means that all adults (above 18) citizens have the right to vote irrespective of their social or economic backgrounds.
2. Dignity:-
This refers to thinking of oneself and other persons as worth of respect.
3. Constitution:- This is a document that lays down the basic rules and regulations for people and the government in the country to follow.
4. Civil Rights Movement:-
A movement that began in USA in 1950s in which African-American people demanded equal rights and an end to racial discrimination.
MORE TO KNOW:-
Excerpt from Article 15 of the Indian Constitution:-
1. The state shall not discriminate against any citizen on grounds only of religion, race, caste, sex, place of birth or any of them
2. No citizen shall ,on grounds only of religion, race , caste , sex ,place of birth or any of them , be subject to any disability, liability, restriction or condition with regard to -
(a) access to shops, public restraunts, hotels and places of public entertainment;
Or
(b) the use of wells , tanks , bathing ghats, roads and places of public resort maintained wholly or partly our of state funds or dedicated to the use of general public.

Chapter 2:- Role of government in health

What is Health?
  • Health means our ability to remain free of illness and injuries. There are certain factors which affect our health.
Healthcare in India
  • India has the largest number of medical colleges in the world and is among the largest producer of doctors.
  • India is the fourth largest producer of medicines in the world.
  • Most doctors settle in urban areas, while people in rural areas have to travel long distance for medical facilities.
  • About 5 lakh people die from tuberculosis every year, while 2 million cases of malaria are reported every year.
  • In India, a paradoxical situation exists as health care resources are uneven.
Private and Public Healthcare
  • Healthcare is divided into two categories: Public health services and private health services.
  • Public health services is a chain of health centres and hospitals run by the government. One important aspect of public health is that it is meant to provide quality healthcare services either free or at a low cost so that even the poor can seek treatment. It is available in both the rural and urban areas.
  • Private health services are not owned or controlled by the government. People have to pay a lot of money for every service that they use.
Healthcare and Equality

In India, private health services are increasing but public health services are not. As the cost of these private services is high, many people cannot afford them.

Private services sometimes encourage practice which is unethical. Barely 20% of the Indian population can afford medicines that they require during an illness.

It is the responsibility of the government to provide quality healthcare services to all its citizens, especially the poor and the disadvantaged.

In 1996, Kerala decentralized its health budget at Panchayati level to ensure effective health planning.

The best example of healthcare comes from Costa Rica where the government provides for adequate healthcare to people.

In a democratic country, it is the expectation of the people that government work for their welfare through the provision of education, health, employment, etc.

Health is a vital aspect because only healthy people can prove themselves resourceful.

Health means our ability to remain free of illness and injuries. In broader sense, health means something more than this. Apart from disease, we need to think of other factors such as clean drinking water, pollution-free surroundings etc. that affect our health. Adequate food is also essential for keeping ourselves in good health.

A life with stress will lead us to illness. Hence we need to be without mental strain. Thus, good health includes both a sound mind and sound body.

We need proper healthcare facilities to maintain good health.

Healthcare facilities include health centres, hospitals, laboratories for test, ambulance services, blood banks, etc.

In order to run such facilities, we need health workers, nurses, qualified doctors, etc.

We also need medicines and equipment that are essential for treating patients.

India has no dearth of qualified doctors. There are a large number of clinics and hospitals too. Perhaps, therefore, a large number of medical tourists come to our country for treatment at a reasonable cost.

India is the fourth largest producer of medicines in the world and is also a large exporter of medicines. Despite all this, the health situation in our country is very poor. The reason is that the government fails to make necessary healthcare available to all.

Healthcare facilities can be divided into two categories—Public health services and Private health facilities.

The public health service is a chain of health centres and hospitals run by the government. It is found in both the rural and urban areas.

At the village level, there are health centres where there is usually a nurse and a village health worker. They deal with common illnesses.

At the district level is the District Hospital that supervises all the health centres.

Big cities have many government hospitals.

Under the public health system, quality health care services are provided either free or at a low cost, so that even the poor can seek treatment.

Under this system, the action is also taken to prevent the spread of diseases like Tuberculosis, malaria, jaundice, cholera, diarrhoea, chikungunya, etc.

A wide range of private health facilities exists in our country. A large number of doctors run their own private clinics.

In the rural areas, Registered Medical Practitioners (RMPs) are found whereas in the urban areas a large number of doctors can be seen.

There are hospitals and nursing homes that are privately owned, and not run by the government.

Unlike public health services in private hospitals, patients have to pay a lot of money for their treatment.

In our country, private services are increasing but public sen/ices are not. As the private sen/ices are run for profit, the cost of these services is rather high. Poor people find it difficult to get treatment here.

Adequate healthcare is not available to all in the country. Only 20% of the population can afford all the medicines that they require during illness.

It has been found that 40% of people who are admitted to a hospital for some illness have to borrow money or sell some of their possessions to pay for the expenses.

For the poor, every illness is a curse. As they are undernourished and live in unhygienic conditions they frequently fall ill. The expenses on illness make their situation even worse.

So far women’s health is associated, it is easily ignored.

Many tribal areas have few health centres.

Thus, we can say without a doubt that the health situation of most people in our country is not good.

However, Kerala has made efforts to provide adequate healthcare to people of the state.

Costa Rica is a country in North America. It is considered to be one of the healthiest countries in the continent.

The Costa Rican government curtailed the expenses on the army to spend it on health, education and other basic needs of the people. It provides them with safe drinking water, sanitation, nutrition and housing.

Medical Tourists: The foreigners who come to our country for medical treatment at hospitals that change the reasonable cost.

Communicable Diseases: Diseases that spread from one person to another through water, food, air, etc.

Public: A service that is meant for all people in the country and is organised by the government. For example, schools, hospitals, etc.

Private: A service that is organised by an individual or company for their own profit.

OPD: It refers to the Out Patient Department. This is where people are first brought in and treated in a hospital without bwithouing admitted to any special ward.

RMPs: It refers to Registered Medical Practitioners. They are found in rural areas.

Chapter 3 :- How the state government works

  • Government works at three levels- national, state and local.
  • In states, it is the MLA (Member of Legislature Assembly) who represents the people. The MLAs enter the assembly and form the government.
  • Every MLA is elected from one area. This area is known as his constituency.
  • Every state in India has legislative assembly.
  • Each state is divided into different constituency.
  • For example:- Himachal Pradesh is divided into 68 assembly constituency.
  • From.each constituency , people elect one representative who then become MLA
  • A political party whose MLA’s win more than half the number of constituencies in the state get the majority. The political party is called the ruling party.
  • All the other members are called opposition.


Working of the Government
  • The organization of the state government includes the Governors, the state legislature and the state council of ministers.
  • Every state in India has a Legislative Assembly and duration of the Legislative Assembly is five years.
  • The head of the state is the Governor while the head of the government consists of the council of ministers headed by the Chief Minister.
  • The leader of the ruling party who forms the government is the Chief Minister.
  • The Legislative Assembly is a place where leaders debate and discuss on important issues and make important bills.
  • In addition to the Legislative Assembly, the press conference is also a mode of knowing what the government does for the people.
  • The government works through various departments like public works department, agriculture, health and education.
  • The government has the power to make new laws for the state regarding health and sanitation.
  • Laws for the state are made by the state Legislative Assembly.
  • Laws for the country are made by the Union Parliament.
  • An MLA is a member of the Legislative Assembly. He is elected by the people. In this way, he represents people.
  • Every state in India has a Legislative Assembly.
  • Each state is divided into constituencies.
  • A constituency is an area from which all the voters living there choose their representatives, who then become Members of the Legislative Assembly (MLAs).
  • These MLAs belong to different political parties.
  • A political party whose MLAs have won more than half the number of constituencies, a state can be said to be in a majority.
  • The political party that has a majority becomes the ruling party and all other members become the opposition.
  • After the elections, the MLAs belonging to the ruling party elect their leader who becomes the Chief Minister. The Chief Minister then selects other people as ministers.
  • The Governor of the state appoints the Chief Minister and other ministers.
  • The ministers have separate offices.
  • Some MLAs have dual responsibilities—one as an MLA and the other as a minister.
  • The debate is generally held in the Assembly to discuss current problems. During debate time MLAs can express their opinions and ask questions related to the issue or give suggestions about what should be done by the government. The minister then replies to the questions and assures the Assembly that adequate steps are being taken.
  • The Chief Minister and other ministers together are responsible to run the government.
  • The word ‘government’, refers to government departments and various ministers who head them.
  • All the MLAs who gather together in the legislative assembly are called the Legislature.
  • The Legislature Assembly is not the only place where opinions are expressed about the work of the government. There several newspapers, TV channels, and other organizations which also talk about the government.
  • After the discussion in the assembly, a press conference is generally held by a particular minister who explains the steps taken by the government. Media persons then report these discussions in several newspapers.
  • The government can also decide to make new laws for the state regarding sanitation and health facilities. The various government departments then implement these laws.
  • Whenever the government fails to satisfy people’s needs, they organize meetings to voice their opinions and protest against the government.
Glossary:-
Constituency: It refers to a particular area from which all the voters living there choose their representatives.

Majority: A political party whose MLAs have won more than half the number of constituencies in a state can say to be in a majority.

Opposition party: The elected representatives who are not the members of the ruling party belong to the opposition party. The representative together plays the role of questioning government decisions and actions. They also raise new issues for consideration in the Assembly.

Ruling party: The political party that has the majority is known as the ruling party.

Press conference: A gathering of media persons who are invited to hear about and ask questions on a particular issue and are then expected to report on this to the larger public.


Chapter 4:-Growing up as boy and girl

Gender is a social construction through which the social and cultural roles of males and females are defined.

Most of the societies value men and women differently. The role women play and the work they do are usually valued less than the roles men play and the work they do. This clears the fact that men and women do not have the same status.

Gender justice is an important issue to be highlighted.

Samoan Islands

The Samoan islands are one of the large groups of small islands in the southern part of the Pacific Ocean. Till the 1920s, children in this island did not go to school. When the babies started walking on own, they were left under the care of their older brothers and sisters. Children as old as five years looked after their younger siblings.

After attaining nine years of age, boys joined the older boys for outdoor activities like fishing and planting coconuts. However, girls continued looking after the younger ones.

When girls became teenagers, i.e., 14 years of age, they were allowed more freedom as they could then go for fishing and plantation activities or help their mothers in cooking, etc.

Madhya Pradesh

In Madhya Pradesh, India, boys and girls had a different outlook. The school for boys was open while the one for girls was closed.

Men and women do equal work, but it is not valued equally.

Valuing Housework

Many women work in offices and many do only household work.

Valuing housework is an important element which needs to be propagated in society.

If we look at the lives of domestic workers, they are involved in activities like sweeping, cleaning, cooking, washing clothes and dishes or looking after children. Most of these are women.

A number of housework actually involves many different tasks. The work requires strenuous and physically demanding situation.

Women’S Work and Equality

Equality is an important principle of our constitution which says that being male or female should not become a reason for discrimination.

While the constitution does not discriminate between male and female, in reality, discrimination still carries on.

Government has introduced measures like Anganwadis or Child Care Centres to improve the status of women in society.

The government has also started creche facilities to help women to take up employment outside the home.

We find distinctions between boys and girls in our societies. This begins at a very young age.

Boys are often taught to be tough and serious while girls are taught to be soft and mild.

Boys are given toys like cars and guns to play with while girls are seen playing with dolls. These toys become a way of telling children what they will have different futures when they become men and women.

Most societies value men and women differently. The roles women play and the work they do are usually valued less than the roles men play and the work they do. This clears the fact that men and women do not have the same status.

If a woman is a housewife, it is often said that she does not work. But the reality is that it is always the woman who bears the main responsibility for housework and caregiving tasks like looking after the family. As she does not earn money by doing these tasks, her work is not recognized.

The term houseworks involves many different tasks which require heavy physical work.

In both rural and urban areas women and girls carry heavy headloads of firewood. Housework also involves washing clothes, cleaning, sweeping and cooking foods, etc. for the family. All these works are very tough, still, women do them every day. They do not complain or show any anguish on their face.

The work of women is time-consuming too. They do not have much time for leisure.

Many women nowadays work both inside and outside the home. This is often referred to as the double burden. Women bear this double burden very skilfully and efficiently.

Equality is an important principle of our constitution which says that being male or female should not become a reason for discrimination. But what we see in reality is that inequality still exists between both the sexes. The government is, therefore, very much keen to take some positive measures to improve the situation.

The government has set up Anganwadis or Child-care Centres in several villages in the country.

The government has also started creche facilities to help women to take up employment outside the home.

Caregiving: Looking after the family with great sincerity.

Devalue: When we do not give due recognition for work, it means we devalue it. In our society, women’s work is easily devalued.

Double-burden: There are several women who work both inside and outside the home. This is known as a double burden.

Identity: It is a sense of awareness of who one is. For example, a person can be a brother, a pilot, an engineer, etc.

Physically demanding: It refers to the household tasks which are very tough and demand great physical strength.

Time-consuming: It refers to the various household tasks which take much time.

Strenuous: Very tough and difficult.

Chapter 5:-Women change  the world
Women have been facing inequalities at every step.

By getting an education, women have got opportunities to rise in every field.

Women’s movement has risen to challenge discrimination in all parts of the world.

Fewer Opportunities and Rigid Expectation

A lot of people feel that women are fit only for certain kinds of jobs as a nurse. They are not fit for technical jobs.

In most families, women are taught that after school they have to get married. Laxmi Lakra, however, broke this stereotype image when she became the first woman engine driver of the Northern Railways.

We live in a society full of pressures. If boys do not work hard and get a good salary they are bullied

Learning for Change

Going to school is an important part of life.

Today, it is difficult for us to imagine that school and learning could be seen as out of bounds or not appropriate for some children.

In the past, very few people learnt reading and writing. Most children learnt the work their families or elders did. Even in families where skills like pottery, weaving and craft were taught, the contribution of daughters and women was seen as secondary.

In the nineteenth century, new ideas about learning and education appeared. But there was a lot of opposition to educating girls ever then.

In the 1890s, Ramabai championed the cause of women’s education.

Rokeya Sakhawat Hossain learnt English from her elder brother and an elder sister in spite of family opposition and went on to become a famous writer.

Rashsundari Devi of Bengal was the first Indian woman to write an autobiography called ‘Amar Jiban’.

Schooling and Education Today
Today both boys and girls attend school in large numbers.

The difference in Their Education Still Remains

Today education is the right of both boys and girls, despite that only 50 % of the girls receive an education.

India has a census every 10 years which counts the population of the country. This information is used to measure things like literacy, sex-ratio, etc.

A huge number of SC and ST children leave school at an early age. The 2014 census even shows that Muslim girls are less likely than Dalit girls to complete primary school.

Many reasons like non-availability of teachers and schools, lack of transport, cost of education, indifferent attitude of teachers and parents are responsible for the negligence of education.

Women’s Movement

Women have individually and collectively struggled to bring about changes. This is called the Women’s Movement.

Different strategies have been used to spread awareness, fight discrimination and seek justice.

These movements are related to campaigning, raising awareness, protesting and showing solidarity.

Men and women in society are looked upon as playing specific gender roles.

Women have been facing inequalities at every step since time immemorial. No doubt, their position and status have been improved with the change of time, still, they lag behind men in almost every field.

In this male-dominated society, they fail to avail equal privileges and opportunities.

It has also been seen that some occupations are considered to be more suitable for men than for women. It means women are good at only certain jobs.

Many people believe that women make better nurses because they are more patient and gentle. It is also believed that women do not bear technical mind and therefore they are not capable of dealing with technical things. Thus, they have been stereotyped as good nurses, good teachers, etc. They are never seen as army officers, pilots, railway engine drivers, etc.

A majority of Indians believe in these stereotypes. It is, therefore, girls do not get the same support that boys do to study and train to become doctors and engineers.

Today’s women have become very aware. They are determined to break these stereotypes by excelling them in fields which were considered male preserves till now. We have now women pilots, engineers, police officers, scientists etc. We can mention here the name of Laxmi Lakra who by becoming an engine driver, showed the world that women can do everything.

Children especially boys are under great pressure. They are pressurised to think about getting a job that will pay a good salary.

It is a matter of great anxiety for the parents if their son shows his inclination towards studying subjects other than science or maths.

In our present social set-up parents have developed a false belief that only science and maths are meaningful subjects. Only these subjects can make their son’s future secured. These notions have no base. They must be eliminated from our mind. Subjects like history, political science, etc. are also job oriented.

One positive change that is visible today is that more and more children have started going to school. In the past, the skill of reading and writing was known to only a few. Most children learnt the work their families or elders did.

But girls faced the even worse situation. In communities that taught sons to read and write, daughters were not allowed to learn the alphabet.

Slowly and steadily there came more and more positive changes. The communities that never learnt reading and writing started sending their children to school. In the beginning, there was a lot of opposition jp educating girls. But there were also women and men who made efforts to open schools for girls.

Women struggled to learn to read and write. Here, the experience of Rashsundari Devi (1800-1890) is worth mentioning. She was a housewife from a rich landlord’s family. At that time, it was believed that if a woman learnt to read and write, she would become a widow. Despite this, she taught herself how to read and write in secret, after her marriage. She wrote her autobiography in Bangla which titled Amar Jaban,

Rokeya Sakhawat Hossain was another example who did a lot for women’s education. She knew how to read and write Urdu, but she was stopped from learning Bangla and English. In those days only boys were taught English. However, she learnt to read and write Bangla and English. Afterwards, she became a writer and wrote a remarkable story titled Sultana’s Dream in 1905. She did a lot to help other girls go to school and to build their own dreams. In 1910, she started a school for girls in Kolkata which is still functioning well.

No doubt more and more girls have started attending school, still they lag behind boys. As per the most recent census of 2001, 76% of boys and men are literate but the figure is comparatively very low in case of girls. Only 54% of girls and women are literate in India. Thus, the percentage of the male group is higher than the female group.

Girls who are from Dalit and Adivasi backgrounds are less likely to remain in school. One of the many reasons is that several families are too poor and unable to bear the cost of educating all their children. Boys easily get preference in such circumstances.

The position and status of women have undoubtedly improved a lot which is due to the collective efforts of the women of the country. Women’s Movement also gets the support of men. They used different strategies to spread awareness, fight discrimination and seek justice. For example, they organise campaigns to fight discrimination and violence against women. They also protest when violations against women take place. Women’s Movement also shows solidarity with other women and causes.

Stereotype: the Fixed image of a person and a community. Stereotypes prevent us from looking at people as unique individuals.

Discrimination: Treating people unequally.

Violation: When someone forcefully breaks the law or a rule or openly shows disrespect, we often say that he/she has committed a violation.

Sexual Harassment: Physical or verbal behaviour that is of a sexual nature and against a woman’s wishes.

Protest: To raise voice against the wrong action or decision.

Scheduled Caste (SC): It is the official term used for Dalit class of people.

Scheduled Tribe (ST): It is the official term used for Adivasi class of people.

Autobiography: Autobiography is the life sketch of the writer himself.

Manuscript: The script written in the writer’s own handwriting.

Census: Census is held every 10 years. It counts the whole population of the country. It also gathers information about the people living in India—their age, schooling, what work they do, and so on.

Chapter 6 :-Understanding media

Media refers to all means of communication, everything ranging from a phone call to the evening news on TV can be called media. TV, radio, and newspapers are forms of media. Since they reach millions of people across the world they are called mass media.

Media is the plural form of the word ‘medium’ and it describes the various ways through which we communicate in society.

Media and Technology

Life without media is difficult. Cable TV and the Internet are recent phenomena.

Both print media and electronic media have played an important role in social change.

Changing technology or machines help media to reach more people.

Television has enabled us to think of ourselves as members of the global people.

It is the responsibility of the media to present a fair and balanced report.

Media is far from being independent. This is because of the control of the government over media called censoring and because big business houses control the media.

An independent media means that no one should control and influence its coverage and news.

Media and Money

The different technologies that mass media use are expensive.

In a news studio, it is not only the newsreader who needs to be paid but also a number of other people who help put the broadcast together.

A lot of money is spent on getting the latest technology. To meet this cost, it needs money.

Media thus has come to be owned by big corporate.

Media, therefore, uses advertising as a tool to raise revenue.

Media and Democracy

Media plays a very important role in providing news and discussing events taking place in the country and the world.

New stories of media inform people about important events in the country.

Some important ways by which people can take about important events in the country are organizing public protests, starting a signature campaign, etc.

Setting Agendas

The media also plays an important role in deciding which stories to focus on.

By focusing on particular issues, it influences and shapes our thoughts. It is said the media sets the agenda for people.

Very recently, the media reported alarming levels of pesticides in cold drinks. This report led to safety standards being set for colas.

Media plays a very important role in our lives as it tells us about working of the government.

Freedom of expression should be given to media to report events independently.

Media is the plural form of the word ‘Medium’. It describes the various ways through which we communicate in society.

Media refers to all means of communication, everything ranging from a phone call to the evening news on television.

Television, radio, and newspapers are called mass media because they reach millions of people at the same time.

Cable television and the widespread use of the Internet is a recent phenomenon.

The technology that mass media uses keeps changing.

Newspapers and magazines come under print media while television and radio come under electronic media.

Changing technology, or machines and making technology more modern, helps media to reach more and more people. It also improves the quality of sound and the images. It also changes the ways in which we think about our lives.

Television plays a major role in our life. We cannot think of life without TV. It gives us news and entertainment and many other things.

Mass media uses expensive technologies. A TV studio needs lights, cameras, sound recorders, transmission satellites, etc. All these cost a huge amount of money.

Mass media also spends a lot of money on getting the latest technology.

Most television channels and newspapers become a part of big business houses in order to fulfill their requirement of money.

Mass media earns money by advertising different things such as surf, chocolates, etc.

Media plays a significant role in democracy. It provides news and discusses events that take place in the country and the world. It is on the basis of this information we come to know how the government works.

The information that the media provides should be balanced. A balanced report is one that discusses all points of view of a particular story and then leaves it to the readers to make up their minds.

Independent media can write a balanced report. Hence, it is necessary for the media to be independence.

But the reality is that media is far from independent.

There are two reasons behind it. The first is the control that the government has on the media. Where the government prevents either a news item or scenes from a movie, or a lyric of a song from being shared with the larger public, this is known as censorship. During the Emergency period (1975-77) the government censored the media.

While the government does continue to censor films, it does not really censor the media’s coverage of news.

Despite the absence of censorship by the government, most newspapers do not provide a balanced report.

It has been found out by the persons who research media that business houses control media. It means that the media is not independent.

Media sets the agenda. It means media has to decide what stories to focus on and therefore, decides on what is newsworthy.

Media should focus on issues that are significant in our lives. But very often it fails to do so. Cricket, fashion shows are very popular with the media.

Local media deals with small issues that involve ordinary people and their daily lives. Khabar Lahriya, a fortnightly newspaper, is run by eight Dalit women in Chitrakoot district in Uttar Pradesh. It is written in the local language, Bundeli.

Media: The word ‘media’ refers to all means of communication, everything ranging from a phone call to the news on television.

Public protest: When people collectively state their opposition to some issue by organizing a rally, starting a signature campaign, etc., it is known as a public protest.

Balanced report: A balanced report is one that discusses all points of view of a particular story and then leaves it to the leaders to make up their minds.

Censorship: The government has the power to disallow media from publishing or showing certain stories. This means that the government can censor the media.

Broadcast: A TV or radio programme that is widely transmitted.

Setting Agenda: One of the important functions of media is that it decides what stories should be focused on and thus decides on what is newsworthy. This is often said that the media sets the agenda.
Local Media: It deals with small issues that involve ordinary people and their daily lives. It publishes news of local importance.

Saturday, May 30, 2020

Tissue class 9

Target audience :- Class 9th CBSE / other relevant board following NCERT
Topics to be covered:
*Introduction
*Difference between plants and animals
*Plant tissues
          -Types (2)
               +Meristematic tissue
               +Permanent tissue
*Animal tissues
          -Types(4)
               +Epithelial tissue
               +Connective tissue
               +Muscular tissue
               +Nervous tissue
-INTRODUCTION:-
In the last chapter we have discussed about cell . We have learnt
*Cell is the building block of life
*All organisms are made up of cells
*On the basis of number of cells, there are      two types of cells
      +Unicellular(Amoeba)
      +Multicellular(Homo sapiens)
#In Amoeba ,all the life processes ( digestion, respiration, transportation and excretion) are done by single cell.
#In Homo sapiens , division of labour occur.
  -In this cells aggregate to form tissue and thus perform specialised function very efficiently.
  -For example muscle cells contract and relax to cause movement,
  -Nerve cells carry messages and
  -Blood flow to transport Oxygen,food,           water and waste etcs.
DIFFERENCE BETWEEN PLANTS AND ANIMAL
• Plants are stationary(Do not move).
•Most of the tissues are supportive (provide  structural strength)
•Most of the tissues are dead( provide mechanical strength)
• Dead tissues need less maintenance.
• Growth is limited to certain regions.
• some cells divide throughout life Such cells are called meristematic cells and rest are of permanent type.
• structural organisation of Organ and Organ system is less complex.
Now let us figure out animals
•Show locomotion(movement from one place to another) in search of food , mate and shelter.
•Consume more energy
•Most of the tissues are living.
• Uniform growth occur upto certain age limit.
• No demarcation of dividing and non dividing region
• Structural organisation of Organ and Organ systems is more specialised.
They possess different life styles and so different kind of tissue
We will now learn about Plant tissues:-
*PLANT TISSUES
  Types (2)
      -Meristematic tissue
      -Permanent tissue
MERISTEMATIC TISSUE
- also known as dividing tissue
-growth of plant occur only in those regions where where these tissue present
-depening upon the region where they are present , it is of 3 types:-
     •Apical Meristematic tissue
     •Lateral meristematic tissue
     •Intercalary meristematic tissue (see fig.        6.2)
New cells formed from meristem are life of meristem itself , but as they grow they differentiate to form components of other tissues.
Differentiation :-the process by which Meristem take up permanent shape ,size and a function.
APICAL MERISTEM:-
Location:-gtowing tip of stems and roots
Function:--increases the lenght of stem and root
INTERCALARY MERISTEM-
Location:- base of leaves or internodes of twigs
LATERAL MERISTEM:-
Increases girth (thickness) of stem and root due lateral meristem(cambium)
CHARACTERISTICS OF MERISTEM:-
Possess dense cytoplasm,
•Thin cellulose wall,
•Prominent nucleus
• no storage of food so no vacuole
• no food so no disease
IMP:- used in tissue culture as they are diseases free cells.
PERMANENT TISSUE:-
Meristem differentiate to form different types of permanent tissue.
• Types :- 2
  - Simple permanent tissue
  -Complex permanent tissue
SIMPLE PERMANENT TISSUE
Made up of one type of cells.
Types :-3
   -Parenchyma
         +Aerenchyma
         +Chlorenchyma
   - collenchyma
   -Sclerenchyma
PARENCHYMA
Characteristics:-
-Unspecialised  cells(donot have special function ) with thin cell wall.
-Living cells
-Loosely arranged (large intercellular space)
-Generally store food.
-Location :- Beneath the epidermis.
*Types :- two types
1.Chlorenchyma
2. Aerenchyma
Chlorenchyma:-
-Paranchyma containing chlorophyll is called chlorenchyma.
-Perform photosynthesis.
Aerenchyma:-
-In aquatic plants , large air cavities are present in parenchyma to help them float.
-such parenchyma is called Aerenchyma.
COLLENCHYMA:-
Location:- found in leaves stalks below epidermis.
Characteristics:-
 -living,
- elongate ,
 -irregular thickening at the corners And
 -very little intercellular space
Functions:-
-Provide flexibility to plants.
-Allow bending in various parts of plants without breaking.
-provide mechanical support.

*SCLERENCHYMA:-
Location:-
-in stem around vascular bundle,
-In the veins of leaves,
-in the hard covering of seeds and nuts.
Characters:-
- cells are dead
-long and narrow
-walls are thicker due to lignin.
-No internal space inside the cell.
Functions:-
-Make the plant hard and stiff.
-provide strength to plant parts.

* EPIDERMIS:-
- outermost layer of cells.
-Usually made up of single layer of cells.
-entire surface of plants has an outer layer of epidermis.
-cells are continuous without intercellular space.
-epidermal cells are flat,
-outer and side walls are thicker than inner walls.
- protects all parts of plants.
Adaptation:-
-in very dry habitat epidermis may be thicker since protection against water loss is critical.
-Epidermal cells on the aerial parts of plants often secretes a waxy , water resistant layer On their outer surface
Functions:-
Aids in protection against lose of water,
Mechanical injury,
Invasion by parasitic fungi.
2.In desert plants, epidermis has a thick waxy coating of cutin on its outer surface.
Cutin is a chemical substance with waterproof quality.
Stomata:-
-Small pores here and there on the epidermis of leaf.
-enclosed by two kidney shaped cells called guard cells.
Functions:-
-Exchange of gases with atmosphere.
-Transpiration(loss of water from aerial parts of plants)

*Epidermis of roots:-
-bear long hair like parts that greatly increase the total absorptive surface area.
Function:-
Water absorption.
Secondary meristem:-
-As plants grow older, outer protective tissue undergoes certain changes
-A strip of secondary meristem, located in the cortex forms layers of cells which constitute the cork.
Characteristics:-
-cells of cork are dead , compactly arranged without intercellular spaces.
- have suberin in their walls that makes them impervious to gases and water.
mi

*Complex permanent tissue:-
- made up of more types of cells.
-All cells coordinate to perform common functions.
Types:- two types
1. Xylem
2. Phloem
-Both are conducting tissue contain vascular bundle
-Vascular russes is a distinct feature of complex plants.

Xylem:-
Consists of
1.Tracheids,
2. Vessels
3.Xylem parenchyma
4.Xylem fibres
Tracheids and vessels
- have thick walls and many are dead cells when mature.
-tubular structure
-transport water and minerals vertically.

Parenchyma stores food.

Xylem fibre are mainly supportive in functions.

Phloem :-
Consist of
1. Sieve cells,
2. Sieve tubes,
3.Companion cells,
4.Phloem fibre,
5. Phloem parenchyma.
- Sieve tubes are tubular cells with perforated walls.
- Phloem transports food from leaves to other parts of plants
-phloem fibres are dead
- others are living.

*ANIMAL TISSUES:-

-When we breathe we feel the movement of our chest.
-For this we have muscle cells.
- contraction and relaxation of muscle cells results in movement.
-During breathing we inhale oxygen.
- this oxygen absobed in lungs and is transported to all body cells through blood.
-In mitochondria , oxygen combine with glucose to make Carbon-di-oxide, water and ATP(adinosine triphosphate).
-Blood flows and carries various substances from one part of body to another.(oxygen ,food etc).
-also collect waste from  of all parts of body and Carries them to kidney and liver for disposal.
So blood and muscles are the russes in our body.
Four types of animal tissue in detail:-
1.epithelial tissue
2.connective tissue
3. Muscular tissue
4. Nervous tissue

Epithelial tissue:-
-Covering and protective tissue in animal body.
-Covers most organs and cavaties within the body.
-Forms a barrier to keep different system separate.
-skin, lining of mouth, lining of blood vessels, lung alveoli and kidney tubules are made up of epithelial tissue.
Characteristics:-
-cells are tightly packed and forms a continuous sheet
-have small amount of cementing material between them .
- no intercellular space.
Functions:-
Anything entering or leaving must cross atleast one layer of epithelium
-so permeability of epithelial play important role in exchanging material between body and external environment , also between different parts of body.
-different epithelial shows different structure and so different functions:-
-For example:-
1. Simple squamous epithelium:-
- cells are extremely thin and flat, forms a delicate lining.
-lining of oesophagus , mouth , blood vessels and lung alveoli.
2.Stratified squamous epithelium :- present in skin.
-prevent wear and tear.
When squamous epithelium are arranged in many layers then it is called stratified squamous epithelial.
3. Columnar epithelial:-
-In the inner lining of intestine, tall epithelial cells are present, called columnar epithelial cells.
-In respiratory tract, columnar cells have cilia, so called ciliated columnar epithelial .
- cilia push the mucus forward to clear the tract.
4. Cuboidal epithelial:-
- forms lining of kidney tubules and ducts of salivary glands.
-provide mechanical support.
5. Glandular epithelial:-
- A portion of epithelial tissue fold inward and a multicellular gland is formed , called glandular eplithilial tissue.

*Connective tissue:-
-Tissue which connects the body.
-example:- blood , bone, tendon ligament, adipose, cartilage and areolar.
- Cells are loosely spaced.
-Embedded in intercellular matrix.
- Matrix can be jelly like, fluid , dense or rigid .
- nature of matrix depends upon functions the tissue perform.
1.Blood:- fluid connective issue.
-Matrix is called plasma (fluid) in which RBCs , WBCs and platelets suspended.
- Plasma contains proteins , salts and hormones.
- Blood flows and transport gases, digested food , hormones and waste materials to different parts of body.
2. Bones:-
-strong and non- flexible tissue.
-Forms framework that supports the body.
- anchor the muscles
-support main Organs of the body.
- bone cells are embedded in hard matrix
- matrix compost of hard calcium and phosphorus compounds.
3.Ligament:- join bone to bone.
-elastic , has considerable strength.
- contain very little matrix.
4. Tendon:- join bone to muscle.
-fibrous tissue with great strength but limited flexiblity.
5.Cartilage:-
-widely spaced cells .
-Solid matrix composed of protein and sugar
-smoothen bone surface at joints.
-Present in nose , ear, trachea and laryings.
6.Areolar connective tissue:-
- Found between skin and muscles, around blood vessels and nerves and in bone marrow.
-fill space inside Organs,
-support internal organs.
-helps in repair of tissue.
7. Adipose tissue:-
-fat storing tissue.
-found below the skin and between internal organs.
-act as insulator.

*Muscular tissue:-
-Consists of elongated cells called muscle fibre
-responsible for movement in the body.
- Contains special protein called contractile proteins which contract and relax to cause movement.
Types:- three types
1.voluntory/skeletal/striated muscle
2.involulantory/unstriated muscle
3.Cardiac muscle
1.Voluntory /skeletal/Striated muscle:-
-cells are long, cylindrical, unbranched and multinucleate.
-can move by our conscious will(voluntary)
-attached to body skeleton (skeletal)
-under microscope , it shows alternate dark and light bands (Striated)
-found in limbs .
2.Involuntary /unstriated muscle:-
-cells are long with pointed ends(spindle shaped) and uninucleate.
- movement of food in alimentary canal or contraction and relaxation of blood vessels are the examples.
-we can't start or stop these movements by our own will.
- found in iris of eye, in uterus and in bronchi of lungs.
- no alternative dark or light band seen under microscope (unstriated).
3.Cardiac muscles:-
- muscles of heart shows rhythemic contraction and relaxation throughout life.
-cells are cylindrical, branched and multinucleate.

*Nervous tissue:-
-made up of nerve cells called neurons.
-One meter long cell.
-Highly specialised for being stimulated and then transmitting the stimulus very rapidly from one place to another within the body.
-brain , spinal cord and nerves are all composed of nervous tissue.
-parts of neuron:- three parts
1. Cell body(with nucleus and cytoplasm)
- possess many, short ,branched parts called dendrites.
2. Axon (single long part)
3. Nerve endings.

Many nerve fibres are bound together by connective tissue make up a nerve
- signal passes along nerve fibre is called nerve impulse.
-nerve impulse allow us to move our muscle when we want to.
-Functional combination of nerve and muscle tissue is fundamental to most animals.
-this combination enable animals to move rapidly in response to stimulus.

Thankyou :-)




Tuesday, April 28, 2020

Control and coordination

Control and coordination
Topics to be covered are:- 
1.Introduction,
 2.Animals –Nervous system.
 3.What happens in reflex action 4.Human brain
 5.How are these tissues protected 6.How does the Nervous tissue cause action?
 7.Coordination in plants 8.Immediate response to stimulus 9.Movement due to growth 10.Hormones in animals. Introduction:-
 •Recall the previous:-
 •Feature of alive:-
 •Movement
 •Growth
 •Seed germination
Why do we associate such visible movements with life?
• Because all these are a response to a change
•For example :-bright ligh is focussef on our eyes, the size of pupil gets reduce. 
•We whisper in class
Conclusion:- •All leaving organism respond to a change in the environment.
•The change in the environment to which organism respond is called stimuli such as light , heat , cold smell etc.
•Both plants and animals respond to stimuli but in different way.
System for control and coordination in animals:
•It includes 2 main stats:-
 Nervous system 
Endocrine  system
•Animals – Nervous system -
In animals control and coordination are provided by nervous and muscular tissue 
•Nervous system is made up of neurons 
-All information of stimuli is detected and conducted by specialised neurons present at the tip of sense organs.
 -Such neurons are called receptors  -It conduct information via electrical impulses from one part of body to another
On the basis of where the receptors present, it is of following types:
*Photoreceptor:-
 •Present in ear
 •Receive sound
•Help in hearing and maintaim balance of body.
 *Photoreceptor :-
•Present in eyes
•Receive Light 
•Help in seeing.
 *Thermoreceptors:-
 -Present in skin.
 -Feel temperature.
 -Help in feeling heat / cold and touch.
*Olfactory receptor:-
 -Present in nose.
 -sense of smell
 -help in detection of smell. *Gustatory receptors
 -present in tongue
 -Sense of taste.
 - help in detection of taste
Ques-What is neutron?
Ans:-Neuron is the structure And functional unit of nervous system. How neuron acquire and conduct information?
•What is the Functioning of neuron?
Functioning of neuron:- Neuron acquire information at the end of dendritic tip.
 •As chemical reaction takes place that create an electric impulse
•The impulse travel from dendrite to cell body and then at the end of axon passing through it
•At the end of axon , electrical impulse set off the release of some chemicals.
•These chemicals cross the synapse and start a similar electrical impulse in the dendrite of next neuron
•A similar synapse finally allow delivery of such impulses from neuron to other cells(eg muscle cells or gland). 
*Parts of neuron:-
•Dendrite
- Acquire Information.
•Cell body:- Information acquired is now travelled as an electrical impulse.
•Axon:-Longest fibre on cell body is called axon.
                 -Transmits electrical impulse from cell body to dendrite of        next neuron.

Synapse
Gap between nerve ending of one neuron and denrite of other neuron.
-Here electrical signals are converted into chemical signal for onward transmission.
Types of neuron:-
Sensory Neurons:- Neurons which transmit messages from body parts to CNS.
Motor Neurons:- Neurons which transmit messages from CNS to body parts.
Relay Neurons:- Neurons which relay the signals within CNS.
- Also called mixed neuron
*Reflex action:-
•It is sudden ,quick and automatic response to change in environment.
•Involves only spinal cord.
•Occur within fraction of seconds.:
•Example- knee jerk, withdrawal of hand on touching hot object.

Stimulus
Observable or detectabe change in external or internal environment to which an organism react.
Reflex arc :-
The path through which nerve impulses pass during reflex action is called reflex arc.
Heat(stimulus)-->Receptor(skin)--->Spinal cord--->Effector organ(muscle) -->Response(hand withdraw)

Response:- Final action after reflex action.
Voluntary and involuntary action
Voluntary action:- Action controlled by forebrain.
Example:- Walking , running, writing etc.
Involuntary action:- Actions controlled by mid brain and hind brain.
Example:- Beating of heart, digestion of food , breathing sweating ,working of kidney etc.
Need of reflex action:-
In some situations we need to act quickly otherwise our body would be harmed .
In these cases , response is generated from spinal cord instead of brain.
In this way ,time taken for action is reduced which save us from injury.
Some of these situations are touching a hot object , pinching etc.

Human brain
Main coordinating centre of body.
Consist of 3 parts:-
-Fore brain
-Mid brain
-Hind brain
Fore brain:-
Most complex and specialised part of brain
It consists of
•Olfactory lobe
•Cerebrum
•Diencephalon
Function:-
Olfactory lobe:-Centre for sense of smell.
Cerebrum:-receive sensory impulse from various receptors
Main seat for will power, intelligency memory , experience and conscious sensation and voluntary action.
Diencephalon:- Center for temperature regulation, hunger and emotional reaction.
Mid brain:- consist of 1. Optic lobe ,2. Crura cerebri
Functions:-
Optic lobe:- Centre of visual activities.
Control movement of eye ball and change in pupil size.
Crura cerebri:- Transmit impulse between fore brain and hindbrain.
Control reflex movement of head neck and trunk.
Hindbrain:- Consist of 1.Cerebellum 2. Pons varoli 3.medulla oblongata.
Functions:-
Cerebellum:- Maintain posture and equilibrium of body
Regulate voluntary movement.
Example:- picking pen, walking in a straight line.
Pons varoli:- control involuntary action.
Example respiration regulation
Medulla oblongata:- Control involuntary action .
Example:- Heart beat respiration ,blood pressure, coughing and sneezing etc.
Covering /Meanings of brain
Three menings- 1. Piameter2.Arachnoid membrane 3.Durameter.
Piameter :- innermost, extremely thin , delicate and vascular menings.
Arachnoid membrane:- Middle, thin vascular, give Webby appearance of spider.
Durameter:- Outermost, thick and fibrous layer.
Protection of brain :-

  • Brain is protected by hard bony structure called skull.
  • Along with this it is covered by 3 menings
  • Between piameter and arachnoid membrane, a clear alkaline fluid is present called cerebrospinal fluid
  • Functions of CSF:- Act as a shock absorber.
  • Forms a medium for exchange of nutrients and wastes among nerve tissue.
Protection of Spinal cord:- Spinal cord is protected by vertebral column called backbone.
How does Nervous tissue cause action?
  • When a nerve impulse reaches the muscles, muscles fibre move.
  • Muscle cells moves by changing their shape so that they shorten
How muscle fibre change their shape?
  • Muscle cell have special protein named Actin and Myosin.
  • When these proteins receive impulse their shape and arrangement in the cell change.
  • When this happens, new arrangement of these protein give muscle cells a shorten form.
Coordination in plants:-
Plants do not have nervous system.
Types of movement:-
Two types:-
1. Dependent on growth
2. Independent of growth
Independent of growth:-
  • It has immediate response to stimulus
  • Plants use electrical chemical means to convey information from cell to cell.
  • For movement to happen , cell change their shape by changing the amount of water in them, resulting in swelling or shrinking of cells.
  • Example:- Drooping of Touch me not plants on touching it
Dependent on growth:-
  • These movements are tropic movements(directional movement) in response to stimulus..
  • Tendrils:- pea plants climb up other support by tendrils.
  • Tendrils are sensitive to touch.
  • Part of tendril in contact with support grow slow as compare to part of tendril away from it.
  • This cause the tendril to circle around the object and cling to it.
  • Phototrophism :- growth of plant part towards sunlight. Shoot shows phototrophism.
  • Geotropism:- growth of plant parts toward earth Roots show geotropism.
  • Hydrotropism:-Growth of plant parts toward water. *Roots show hydrotropism.
  • Chemotropism :-growth of plant part towards chemicals example:- growth of pollen tube towards ovule.
Plant hormones:-
  • Chemical compound which help to coordinate growth , development and responses to environment.
  • Main plant hormones are :-
  • Auxin
  • Gibberelin
  • Cytokinins
  • Abscisic acid
Functions of hormones:-
Auxin:- Hormones synthesis at shoot tip.
Help the cell to grow longer.
Involved in photosynthesis.
Gibberellin:-Help in growth of stem.
Cytokinins:-Promote cell division.
Present in fruits and seeds in large concentration
Abscisic acid:-inhibit growth
Cause wilting of leaves.
Also known as stress hormones
Limitations of electric communication:-
  • Electric impulse reach to only those cells which are connected to nervous tissue.
  • Once an electric impulse is generated in a cell and transmitted, cell will take some time to reset it’s mechanism before it can generate and transmit a new impulse.
Note:-
  • Along with electric communication, animals also use another means of communication between cells named chemical communication.
  • Plant donot use electrical communication and use chemical communication only.
  • Mechanism of transporting impulse in plants.
  • When an impulse is received by cell , it releases a chemical compound
  • This compound would diffuse all around original cell.
  • It other cells around have the means to detect this compound using special molecules on their surfaces then they would be able to recognise information and even transmit it.
Hormones in animals:-
  • Chemical substances which coordination the activities of living organisms and also for their growth.
  • Hormones produced in one part of an organism move to another part to achieve desire effect.
  • Endocrine glands secretes their product (hormones into the blood.
  • List of endocrine gland with their hormones name And their functions are listed below:-

Importance of iodine:-
  • Iodised salt is necessary because iodine mineral is essential part of thyroxine hormones.
  • Thyroxine is released by thyroid gland.
  • Thyroxine regulates metabolism of carbohydrates, fats and proteins.
  • So we must consume iodised salt which is necessary for proper working of thyroid gland.
  • It’s deficiency causes a disease called goiter.
  • Diabetes
  • Due to deficiency of insulin hormones
  • Insulin is secreted by Pancreas.
  • Insulin is responsible to control blood sugar levels.
  • Treatment :-Injections of insulin hormones can be helpful.
Feedback mechanism:-
  • The excess or deficiency of hormones has a harmful beffect on our body.
  • Feedback mechanism makes sure that hormones should be secreted in precise quantity and at right time.
  • Example:- Feedback mechanism to control the sugar level in blood as follows:-

Important ques assignment:--
  • write in detail about animals nervous system .
  • What are receptors And it’s types?
  • What is neuron? Write about functioning of neuron.
  • Write about parts of neuron.
  • What are the types of neuron?
  • What is reflex action?
  • Define :- stimulus, reflex arc and response.
  • What is the need of reflex action?
  • What is voluntary and involuntary action?
  • Draw and give a detain about CNS.
  • How is brain protected?
  • How muscle fibre change their shape?
  • Give a detail account of coordination in plants.
  • Define :- Phototrophism, geotropism, hydrotropism and chemotropism
  • What are plant hormones? Explain in detail.
  • What are animal hormones? Explain in detail.
  • What is the importance of iodine?
  • What is diabetes?
  • What is feedback mechanism?