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NCERT Solution Population Class 9

Question 1: Migrations change the number, distribution and composition of the population in

1. The area of departure
2. Both the area of departure and arrival
3. The area of arrival
4. None of the above

Answer: (b) Both the area of departure and arrival

Question 2: A large proportion of children in a population is a result of

1. High birth rates
2. High death rates
3. High life expectancies
4. More married couples

Question 3: The magnitude of population growth refers to

1. The total population of an area
2. The number of persons added each year
3. The rate at which the population increases
4. The number of females per thousand males

Question 4: According to the Census 2001, a “literate” person is one who

1. Can read and write his/her name
2. Can read and write any language
3. Is 7 years old and can read and write any language with understanding
4. Knows the 3 ‘R’s (reading, writing, arithmetic)

Question 5: Why is the rate of population growth in India declining since 1981?

The population growth rate in India started declining gradually after 1981 due to the following reasons:

• Control over birth rate because of the creation of awareness among people by the Government policies.
• The rising rate of literacy among the people
• National population policy was implemented by the government which laid emphasis on the education of adolescents, delayed marriage and childbearing.
• This helped in reducing the rate of population growth in India since 1981

Question 6: Discuss the major components of population growth.

Answer:  Rate of birth, death rate and migration are the main components of population growth. A higher birth rate; associated with a lower death rate cause population growth. International migration can cause the population growth of more number of people are coming from other countries than the number of people going outside the country.

Question 7: Define age structure, death rate and birth rate.

Answer: Age Structure: Relative percentage of various age groups in the population is called age structure of the population. Age group is usually divided into children (up to 14 years), working-age (15 – 59 years) and retired aged (60 years and above).

Death Rate: The number of deaths per 1000 persons is called the death rate.

Birth Rate: The number of live births per 1000 persons is called birth rate.

Question 8: How is migration a determinant factor of population change?

Answer: Migration within the country is called internal migration, while between the two countries is known as international migration. Internal migration has no change in population size but it changes the population composition of a particular area. International migration can lead to growth or decreasing in population; depends on the degree of immigration and emigration.

Question 9: Distinguish between population growth and population change.

Answer: Population growth says about an increase or decrease in the population. Population change is about changes in population composition; like age structure, sex ratio, literacy rate, occupational structure, etc.

Question 10: What is the relation between occupational structure and development?

Answer: Occupational structure greatly affects the development of a country. A large portion of the Indian population is still dependent on the primary sector for employment; which is one of the reasons for lack of development in India. Examples of developed nations suggest that when a greater portion of the population engages in secondary and tertiary activities, it leads to proper development.

Question 11: What are the advantages of having a healthy population?

Answer: A healthy population helps in building a productive workforce for the country. Even the non-productive age group needs to be healthy to reduce the burden of healthcare. Healthy children would grow into healthy adults and would be able to contribute better in the economy. Healthy elders would mean less drain on the resources.

Question 12: What are the significant features of the National Population Policy 2000?

Answer: NPP 200 has put special emphasis on the adolescent population. Focus is given to the special nutritional needs of adolescents. Awareness programmes are conducted to increase awareness about STDs, unwanted pregnancies, child marriage, risks of unprotected sex, etc.