Population Book Back

Question 1

The statistical study of human population is :

Population density

Population growth

Demography

Population explosion

Answer 1

Demography

Question 2

Surgical method of sterilization in women involves cutting and tying of :

Ureter

Fallopian tube

Uterus

Urethra

Answer 2

Fallopian tube

Question 3

When the number of individuals added to the population exceeds the number of individuals lost, there is :

Decrease in carrying capacity

Exponential population growth

Zero population growth

Decrease in biotic potential

Answer 3

Exponential population growth

Question 4

The symbol of family welfare is :

Red circle

Green triangle

Red square

Red inverted triangle

Answer 4

Red inverted triangle

Question 5

Death rate is the number of deaths:

per 1000 people per year

per 100 people per decade

per 1000 people per decade

per 100 people per year

Answer 5

per 1000 people per year

Question 6

What was directly responsible for the rapid rise of world population in the twentieth century ?

Better education and jobs

Religious and social customs

Better healthcare

Increased food production

Answer 6

Better healthcare

Question 7

Which of the following is not a non-conventional source of energy ?

Nuclear energy

Tidal energy

Petroleum energy

Wind energy

Answer 7

Petroleum energy

Question 8

Birth rate is technically termed as :

Population density

Natality

Carrying capacity

Mortality

Answer 8

Natality

Question 9

Which of the following is an exhaustible source of energy ?

Fossil fuels

Nuclear energy

Solar energy

Wind energy

Answer 9

Fossil fuels

Question 10

What are the age restrictions for marriage by law for boys and girls in India?

18 years, 21 years

21 years, 19 years

21 years, 18 years

18 years, 17 years

Answer 10

21 years, 18 years

Question 11

Give the technical term for statistical study of human population of a region

Answer 11

Demography

Question 12

Name two surgical techniques (one for the human male and another for the human female) that can be used to prevent pregnancy.

Answer 12

Vasectomy (for male)
Tubectomy (for female)

Question 13

Givetwo advantages of a small family

Answer 13

•They can provide the best possible education for their children.
•a small family has better savings for the future. It would help them in building a house, buy a car.

Question 14

List three major landmarks in human history which contributed to the sudden rise in population of the world

Answer 14

Tool making revolution.

Agricultural revolution.

Scientific industrial revolution.

Question 15

What is meant by family welfare centres? What is the symbol of family welfare in our country?

Answer 15

*The inverted red triangle has become a popular sign in India for family welfare.

*It is prominently displayed at all such offices and hospitals where any help or advice about family planning is available free of cost. These are known as family welfare centres.

Question 16

Canthere be a corresponding operation made in women? If yes,where?

Answer 16

*Yes, there could be a corresponding operation made in women.
* The name of the surgical procedure in females is ‘tubectomy’.
* In tubectomy, the abdomen is opened and the fallopian tubes (oviducts) are cut or ligated i.e. tied with nylon thread to close the passage of the egg.

Question 17

Write the full forms of the following abbreviations:

(a) IUDs

(b) MTP

Answer 17

(a) IUDs — Intra-Uterine Devices

(b) MTP — Medical Termination of Pregnancy

Question 18

Explain briefly the relationship between poverty and population and how one affects the other.

Answer 18

Poverty and thelack of access to education leads to higher birthrates and overpopulation.

Question 19

Mention two reasons for the rapid increase of population in India.

Answer 19

*Illiteracy — Most of the rural population which forms the bulk of our society is still illiterate, ignorant and superstitious. They also do not know the functioning of the human reproductive system.

*Traditional Beliefs — Among the people from lower strata of the society, children are regarded as a gift of God and a sign of prosperity. Therefore, they make no effort to avoid pregnancy.

Question 20

Population

Answer 20

A population is defined as agroup of individuals of the same species living and interbreeding within a given area.

Question 21

Population density

Answer 21

It is the number of individuals per square kilometre (km2) at any given time.

Question 22

Demography

Answer 22

It is the statistical study of human population specifically with reference to size and density, distribution and other vital statistics.

Question 23

Resources

Answer 23

Resource is any substance (natural or artificial), energy or organism which is used by humans for their welfare.

Question 24

Growth rate of population

Answer 24

*It is the difference between the birth rate and the death rate.
*As long as the birth rate exceeds the death rate, the population grows.
*If the birth rate is lower than the death rate, the population declines.

Question 25

What do you mean by the 3Rs in the context of sustainable development?

Answer 25

The 3Rs in the context of sustainable development are Reduce, Reuse and Recycle. Reduction of excessive use of natural resources. Recycling and reuse of resources wherever possible. More use of renewable resources such as solar energy, wind power,etc.

Question 26

Our resources cannot keep pace with the rising population. Give three examples in support of this statement

Answer 26

Food-the rate of food production doesn't match the rate of population growth. Production of food rises by arithmetic progression whereas population grows by geometric progression.  Water — Availability of clean and germ-free water for drinking purposes would be more and more scarce with increase in population; the reason would be mainly, the pollution of rivers, ponds, lakes etc. Land — Man is bringing more and more land under cultivation and also using up land for building more residential colonies, factories and industries. Usable land would thus become less and less available.

Question 27

How can the knowledge of the processes of reproduction help people in limiting the size of their families? Give two concrete examples.

Answer 27

•Married couples should be educated to delay the birth of their first child, They should also be educated to adopt •family planning methods by which they can prevent pregnancy after two children. •These include devices for both men and women, for example — Condoms, intrauterine devices (IUD) and oral pills.

Question 28

What is the idea behind the phrase "population explosion"?

Answer 28

*Illiteracy — Most of the rural population which forms the bulk of our society is still illiterate, ignorant and superstitious. They also do not know the functioning of the human reproductive system. *Traditional Beliefs — Among the people from lower strata of the society, children are regarded as a gift of God and a sign of prosperity. Therefore, they make no effort to avoid pregnancy.