CBSE Questions for Class 9 Geography Population Quiz 5 - MCQExams.com

• Migration is the movement of people across regions and territories. It is a determinant factor of population change as it changes the demographics (size and composition) of both the areas of departure and arrival.
  
• Migration within the country is called internal migration, while that between two countries is called international migration.
  
• Internal migration has no change on population size but it changes the population composition of a particular area.
  
• International migration can lead to a growth or degrowth in population; depending on the degree of immigration and emigration.
  

Density of population is defined as the number of persons per square kilometer 

Among states, Bihar has most densely populated states  with 1102 persons /sq km in 2011 and881 persons /sqkm in 2001 and Arunachal Pradesh has the least densely populated state with 17 persons/sqkm in 2011 and  13 persons/sq km in 2001.

In 1999, less than 30 years later, the population doubled to 6 billion. The main reason for this growth was that with better food supplies and medicine, deaths were reducing, while the number of births still remained fairly high.

Literate is a person who acquires the capacities of reading, and writing by himself or herself. According to the Census 2001, a literate person is one who is 7 year old and can read and write any language with understanding.

Table presents the trends in population growth in India during the hundred years from 1901 o 2001. The rate of growth in India’s population remained very low till 1921, and in fact, the rate of growth was negative during 1911-21. India’s population recorded a virtual shrink in its size in the wake of influenza epidemic, which had struck in 1919. It has been estimated that the epidemic claimed the life of nearly 7 per cent of the population in the country.

A census is an official enumeration of population growth done periodically. In India the first census was done in the year 1872. The first complete census was taken in the year 1881. Since then the census have been held regularly every tenth year.

The Indian Census gives a detailed account of demographic social economic data. The last census was held in the year 2001. 

C. 10 to 19 years

The segment of population within the age group of 10 to 19 years is generally termed as adolescents. They are the would-be adults and are the most important resource of the country for the future. In India one fifth of the total population is the adolescent population. The huge size of adolescent population is a most significant feature of the Indian population because their involvement is the potential workforce.

BIMARU stands for the initials of the four poorest states of India that is Uttar Pradesh, Madhya Pradesh, Bihar and Rajasthan. In the term 'BIMARU' - 'BI' stands for Bihar, 'MA' stands for Madhya Pradesh, 'R' stands for Rajasthan and 'U' stands for Uttar Pradesh.