NCERT Solutions Class 9 Social Science Chapter 6 Population

1. Choose the right answer from the four alternatives given below.

(i) Migrations change the number, distribution and composition of the population in

(a) the area of departure

(b) the area of arrival

(c) both the area of departure and arrival

(d) none of the above

Answer: (c) both the area of departure and arrival

(ii) A large proportion of children in a population is a result of

(a) high birth rates

(c) high death rates

(d) more married couples

Ans. (a) high birth rates

(iii) The magnitude of population growth refers to

(a) the total population of an area

(b) the number of persons added each year (c) the rate at which the population increases (d) the number of females per thousand males

Answer: (b) the number of persons added each year

(iv) According to the Census 2001, a “literate” person is one who

(a) can read and write his/her name 

(b) can read and write any language

(d) knows the 3 „R‟s (reading, writing, arithmetic)

Answer: (c) is 7 years old and can read and write any language with understanding

2. Answer the following questions briefly.

(i) Why is the rate of population growth in India declining since 1981?

Answer: Since 1981, the rate of population growth has been declining as a result of greater use of birth control measures.

(ii) Discuss the major components of population growth.

Answer: The major components of population growth are Birth Rate, Death Rate and Migration.

(iii) Define age structure, death rate and birth rate.

Birth rate is the number of live births per thousand persons in a year.

Death rate is the number of deaths per thousand persons in a year.

(iv) How is migration a determinant factor of population change?

Ans. Migration is an important determinant of population change. Migration is the movement of people across regions and territories. It is a determinant factor of population change as it changes the size and composition of population of both the areas of departure and arrival. In India, the rural-urban migration has resulted in a steady increase in the percentage of population in cities and towns.

3. Distinguish between population growth and population change.

Answer:

4. What is the relation between occupational structure and development?

Answer: The percentage of population that is economically active is an important index of development. The distribution of the population according to different types of occupation is referred to as the occupational structure. Developed nations have a high proportion of people in secondary and tertiary activities like banking, commerce, transport and administration. Developing countries tend to have a higher proportion of their workforce engaged in primary activities like agriculture, fishing, mining, lumbering, and food gathering.

5. What are the advantages of having a healthy population?

Ans. Health is an important component of population composition, which affects the process of development. The advantages of healthy population are:

i.   A healthy individual is much more efficient and productive than an unhealthy individual.

ii.   He or she is able to realise his or her potential, and play an important role in social and national development.

iii.   A healthy person is an asset to nation as it is more productive and helps nation to make progress.

6. What are the significant features of the National Population Policy 2000?

Answer: The National Population Policy 2000 provides a policy framework of achieving goals and prioritising strategies during the next decade to meet the reproductive and child health needs of the people of India along with the target to achieve the net replacement levels. It aims at stable population by 2045.

i.   Imparting free and compulsory school education up to 14 years of age

ii.   Reducing infant mortality rate to below 30 per 1000 live births

iii.   Achieving universal immunisation of children against all vaccine-preventable diseases

iv.   Providing nutritional services and food supplements to adolescents

v.   The policy also aims at curbing the IMR to less than 30 per 1000 live births.