Population

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Summary

Summary of Population Dynamics in India

Key Points

Population Growth: Refers to the change in the number of inhabitants over a specific period.
Magnitude of Growth: Measured by absolute numbers added each year or decade.
Annual Growth Rate: Expressed in percentage, indicating the rate of increase per year.
Census Data: Provides comprehensive demographic, social, and economic data.
Population Distribution: Uneven across states; significant concentration in Uttar Pradesh, Maharashtra, Bihar, West Bengal, and Andhra Pradesh.
Declining Growth Rate: Since 1981, the growth rate has been declining, indicating effective birth control measures.
Components of Population Change: Births, deaths, and migrations are the primary factors influencing population dynamics.
Age Structure: Important for understanding population composition and potential growth.
Migration: A determinant factor affecting population change, influencing both the area of departure and arrival.

Important Statistics

Total Population (2011): 1,210.6 million (17% of the world's population).
Most Populous State: Uttar Pradesh (199 million, 16% of India's population).
Least Populous State: Sikkim (0.6 million).

Definitions

Birth Rate: Number of live births per 1000 persons per year.
Death Rate: Number of deaths per 1000 persons per year.
Density of Population: Average number of persons per unit area (e.g., square kilometer).
Dependency Ratio: Ratio of dependent age groups (below 15 and above 60) to economically active ages (15-59).
Life Expectancy: Average number of years one is expected to live.

Learning Objectives

Understand the significance of population in social studies.
Analyze the factors influencing population growth and distribution in India.
Define key terms related to population, such as birth rate, death rate, and migration.
Evaluate the impact of migration on population change.
Discuss the components of population growth, including birth rates, death rates, and migration.
Assess the implications of the National Population Policy 2000 on population management.

Detailed Notes

Population Growth and Change

Key Concepts

Population Growth: Refers to the change in the number of inhabitants of a country/territory during a specific period of time.
Magnitude of Increase: The absolute numbers added each year or decade, obtained by subtracting the earlier population from the later population.
Rate of Increase: The pace of population increase, expressed in percentage per annum.

Important Statistics

Year	Total Population (in million)	Absolute Increase in the Decade (in million)	Annual Growth Rate (%)
1951	361.0	42.43	1.25
1961	439.2	78.15	1.96
1971	548.2	108.92	2.20
1981	683.3	135.17	2.22
1991	846.4	163.09	2.16
2001	1028.7	182.32	1.97
2011	1210.6	181.46	1.64

Factors Influencing Population Change

Birth Rates: The number of live births for every 1000 persons in a year.
Death Rates: The number of deaths per 1000 persons in a year.
Migration: Movement of people from one place to another, which can be internal (within a country) or external (between countries).

Components of Population Growth

Age Structure: The distribution of various age groups in a population.
Dependency Ratio: The ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

Population Distribution

Uneven Distribution: Population is not evenly spread across India; for example, Uttar Pradesh is the most populous state, while Sikkim has a very small population.
Density of Population: Varies significantly, with some states having high densities due to fertile land and favorable conditions, while others are sparsely populated due to rugged terrain and unfavorable climates.

National Population Policy 2000

Aimed at achieving a stable population by 2045 and improving the quality of life.

Census of India

The first complete census was conducted in 1881, and it provides comprehensive demographic, social, and economic data.

Exam Tips & Common Mistakes

Common Mistakes and Exam Tips

Common Pitfalls

Misunderstanding Population Terms: Students often confuse terms like population growth, population change, and migration. Ensure clarity on definitions.
Ignoring Census Data: Failing to analyze census data properly can lead to incorrect conclusions about population distribution and growth.
Overlooking Components of Population Growth: Not recognizing the significance of birth rates, death rates, and migration as components of population change can affect overall understanding.

Tips for Exam Preparation

Review Key Definitions: Familiarize yourself with definitions such as birth rate, death rate, and migration to avoid confusion.
Practice with Census Questions: Engage with practice questions related to census data to improve your analytical skills.
Understand Population Dynamics: Focus on how different factors like birth rates and migration impact population growth and structure.
Use Visual Aids: Diagrams and charts can help in visualizing population distribution and growth trends, making it easier to remember key concepts.

Practice & Assessment

Multiple Choice Questions

1.6 million

1.2 million

1.8 million

2 million

Correct Answer: A

Solution:

The dependency ratio is calculated as the ratio of dependents (people below 15 and above 60 years) to the economically active population (15-59 years). If the dependency ratio is 60%, it means that for every 100 economically active individuals, there are 60 dependents. Therefore, if the economically active population is 1 million, the number of dependents is 0.6 million. The total population is the sum of the economically active population and dependents:

1 + 0.6 = 1.6

million.

Fold

Fault

Geosyncline

Plateau

Correct Answer: B

Solution:

A fault is a linear break in rocks of the earth's crust along which there has been displacement in a horizontal, vertical, or oblique direction.

A country with a high number of people aged 15-59 and fewer children and elderly.

A country with equal numbers of children, working-age adults, and elderly.

A country with a large number of children and elderly compared to working-age adults.

A country with a declining birth rate and increasing life expectancy.

Correct Answer: C

Solution:

The dependency ratio measures the proportion of dependents (children below 15 and elderly above 60) to the working-age population (15-59 years). A high dependency ratio indicates more dependents than working-age adults.

Rugged terrain

Fertile soils and abundant rainfall

Low rainfall

Rocky nature of the terrain

Correct Answer: B

Solution:

The Northern Plains have high population densities due to flat plains with fertile soils and abundant rainfall.

The number of live births per 1000 persons in a year

The number of deaths per 1000 persons in a year

The number of children born in a decade

The number of females per 1000 males

Correct Answer: A

Solution:

Birth rate is defined as the number of live births for every 1000 persons in a year.

It measures the number of females per thousand males.

It indicates the proportion of children in a population.

It is the ratio of people of dependent age to those of economically active ages.

It refers to the number of persons added to a population each year.

Correct Answer: C

Solution:

The dependency ratio is the ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

high birth rates

high life expectancies

high death rates

more married couples

Correct Answer: A

Solution:

High birth rates lead to a larger proportion of children in the population.

A system comprising the physical environment and organisms living therein.

Plant communities occurring in distinct groups in areas with similar climatic conditions.

The total vegetation or plant cover of a region.

The animal life of a given area.

Correct Answer: B

Solution:

A biome refers to plant communities occurring in distinct groups in areas having similar climatic conditions.

A mass of snow and ice that moves slowly under the influence of gravity

A linear break in rocks of the earth's crust along which there has been displacement

A narrow, shallow, elongated basin with a sinking bottom

A bend in the rock strata resulting from compression

Correct Answer: B

Solution:

A fault is a linear break in rocks of the earth's crust along which there has been displacement in a horizontal, vertical, or oblique direction.

total land area

base population

number of births

number of deaths

Correct Answer: B

Solution:

The growth rate of population is determined by comparing the increase in population with the base population.

Immigration

Migration

Emigration

Urbanization

Correct Answer: B

Solution:

Migration refers to the movement of people from one place to another.

The total population of an area at the end of a given time period

The total population of an area at the beginning of a given time period

The number of births per 1000 persons in a year

The number of deaths per 1000 persons in a year

Correct Answer: B

Solution:

Base population refers to the total population of an area at the beginning of a given time period, which is used as a reference for calculating growth rates.

The movement of people from rural to urban areas within the same country.

The movement of people from one country to another for permanent settlement.

Both internal movement within a country and international movement between countries.

Temporary movement of people for tourism purposes.

Correct Answer: C

Solution:

Migration includes both internal movement within a country (e.g., rural to urban) and external movement between countries (immigration and emigration).

Rugged terrain and unfavorable climatic conditions

High birth rates in certain regions

Government policies on population control

Migration patterns favoring urban areas

Correct Answer: A

Solution:

The uneven distribution of population in India is primarily due to rugged terrain and unfavorable climatic conditions, which make certain areas less habitable.

552 million

550 million

510 million

560 million

Correct Answer: A

Solution:

The population after 5 years can be calculated using the formula for compound interest:

P = P_0(1 + r)^t

where

P_0

is the initial population,

r

is the growth rate, and

t

is the time in years. Here,

P_0 = 500

million,

r = 0.02

, and

t = 5

. Thus,

P = 500(1 + 0.02)^5 = 500 \times 1.10408 = 552.04

million. Therefore, the population will be approximately 552 million.

Rugged terrain and unfavourable climatic conditions

Flat plains with fertile soils and abundant rainfall

High birth and death rates

Presence of major industrial hubs

Correct Answer: B

Solution:

The Northern Plains have high population densities due to their flat plains, fertile soils, and abundant rainfall, which are conducive to agriculture and human settlement.

50 million

5 million

10 million

55 million

Correct Answer: A

Solution:

The absolute increase in population is calculated by subtracting the initial population from the final population: 550 million - 500 million = 50 million.

the area of departure

the area of arrival

both the area of departure and arrival

none of the above

Correct Answer: C

Solution:

Migration affects both the area of departure and the area of arrival by altering the population size and composition.

An increase in birth rates and a decrease in death rates.

A decrease in birth rates and an increase in death rates.

An increase in immigration and a decrease in emigration.

An increase in life expectancy and a decrease in birth rates.

Correct Answer: B

Solution:

A decrease in birth rates and an increase in death rates would lead to a decrease in the growth rate of a population.

A high-pressure area in temperate regions

A hollow sunken area of the earth's surface

An area of relatively low atmospheric pressure

A mass of snow and ice moving under gravity

Correct Answer: C

Solution:

In meteorology, a depression denotes an area of relatively low atmospheric pressure, which is found mainly in temperate regions.

High birth rates

High death rates

Low migration rates

High literacy rates

Correct Answer: A

Solution:

High birth rates have always been higher than death rates in India, making them a major component of population growth.

A mass of snow and ice that moves slowly.

A salt-water lake separated from the sea by sandbars and spits.

A narrow, shallow, elongated basin with a sinking bottom.

A level tract of land made up of alluvium.

Correct Answer: B

Solution:

A lagoon is a salt-water lake separated from the sea by sandbars and spits.

A system comprising the physical environment and organisms.

Plant communities occurring in distinct groups in areas with similar climatic conditions.

A body of water surrounded by land.

A linear break in rocks of the earth's crust.

Correct Answer: B

Solution:

A biome is defined as plant communities occurring in distinct groups in areas having similar climatic conditions.

A period of life from 10 to 19 years

A period of life from 20 to 29 years

A period of life from 5 to 9 years

A period of life from 30 to 39 years

Correct Answer: A

Solution:

Adolescence is defined as the period in which a person is no longer a child and not yet an adult, grouped in the age range of 10 to 19 years.

A system comprising the physical environment and organisms living therein

Plant communities occurring in distinct groups in areas with similar climatic conditions

A large segment of the earth's crust floating above the asthenosphere

The average number of persons per unit area

Correct Answer: B

Solution:

A biome refers to plant communities occurring in distinct groups in areas with similar climatic conditions.

The ratio of people aged 15-59 to those below 15 and above 60 years

The ratio of the economically active population to the total population

The ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years)

The ratio of males to females in a population

Correct Answer: C

Solution:

The dependency ratio is defined as the ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

The number of females per thousand males

The number of live births per 1000 persons

The average number of persons per unit area

The number of deaths per 1000 persons

Correct Answer: C

Solution:

Density of population is defined as the average number of persons per unit area.

The average number of years one is expected to live.

The number of deaths per 1000 persons in a year.

The number of live births per 1000 persons in a year.

The average number of persons per unit area.

Correct Answer: A

Solution:

Life expectancy is the average number of years one is expected to live.

A high-altitude plateau with steep slopes

A level tract of land made up of fine rock material brought down by a river

A narrow, elongated basin with a sinking bottom

A mass of snow and ice that moves slowly under the influence of gravity

Correct Answer: B

Solution:

An alluvial plain is a level tract of land made up of alluvium or fine rock material brought down by a river.

Maharashtra

Bihar

Uttar Pradesh

West Bengal

Correct Answer: C

Solution:

According to the 2011 Census, Uttar Pradesh had the highest population in India.

Increased emigration

Decline in birth rates

Increased death rates

Higher life expectancy

Correct Answer: B

Solution:

The decline in India's population growth rate since 1981 is primarily due to a decline in birth rates.

Birth rates

Death rates

Migration

All of the above

Correct Answer: D

Solution:

Population change is influenced by birth rates, death rates, and migration.

High life expectancies

More married couples

High death rates

High fertility rates

Correct Answer: D

Solution:

High fertility rates are a primary factor contributing to a high birth rate in a population.

Birth rate

Death rate

Migration

Life expectancy

Correct Answer: D

Solution:

Life expectancy is not a direct component of population growth, unlike birth rate, death rate, and migration.

The ratio of people of dependent age to people of economically active ages.

The number of live births per 1000 persons in a year.

The number of deaths per 1000 persons in a year.

The average number of persons per unit area.

Correct Answer: A

Solution:

The dependency ratio is the ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

can read and write his/her name

can read and write any language

is 7 years old and can read and write any language with understanding

knows the 3 'R's (reading, writing, arithmetic)

Correct Answer: C

Solution:

A literate person is defined as someone who is at least 7 years old and can read and write any language with understanding.

Rugged terrain and unfavourable climatic conditions.

Flat plains with fertile soils and abundant rainfall.

Hilly, dissected, and rocky nature of the terrain.

Moderate to low rainfall and shallow soils.

Correct Answer: B

Solution:

The Northern plains and Kerala have high to very high population densities due to flat plains with fertile soils and abundant rainfall.

Increased biodiversity

Shift in plant community composition

Decrease in plant height

Increase in soil fertility

Correct Answer: B

Solution:

A sudden increase in temperature can lead to a shift in plant community composition as some species may not be able to tolerate the new conditions, while others may thrive. This can alter the existing balance and lead to changes in the biome.

The ratio of males to females in a population

The ratio of economically active individuals to dependents

The ratio of people of dependent age to people of economically active ages

The ratio of children to adults in a population

Correct Answer: C

Solution:

The dependency ratio is defined as the ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

The number of deaths per 1000 persons in a year.

The number of live births for every 1000 persons in a year.

The ratio of people of dependent age to economically active ages.

The average number of persons per unit area.

Correct Answer: B

Solution:

The birth rate is the number of live births for every 1000 persons in a year.

40,000

20,000

60,000

50,000

Correct Answer: B

Solution:

The natural increase in population is the difference between the birth rate and the death rate. Here, the birth rate is 30 per 1000 and the death rate is 10 per 1000, giving a natural increase rate of 20 per 1000. For a population of 2 million, the natural increase is

2,000,000 \times \frac{20}{1000} = 40,000

per year.

The number of people living in a city.

The average number of people per unit area, such as a square kilometer.

The total population of a country divided by its land area.

The number of people living in rural areas compared to urban areas.

Correct Answer: B

Solution:

Population density is defined as the average number of persons per unit area, such as a square kilometer.

The total population of an area

The number of persons added each year

The rate at which the population increases

The number of females per thousand males

Correct Answer: B

Solution:

The term 'absolute increase' refers to the number of persons added each year.

10 per 1000

15 per 1000

20 per 1000

25 per 1000

Correct Answer: B

Solution:

The natural increase rate is calculated as the difference between the birth rate and the death rate. Therefore, it is 30 - 15 = 15 per 1000.

10 per 1000

15 per 1000

25 per 1000

35 per 1000

Correct Answer: B

Solution:

The natural increase rate is calculated by subtracting the death rate from the birth rate. Here, it is 25 - 10 = 15 per 1000.

A period when a person is no longer a child and not yet an adult, aged 10 to 19 years.

A period when a person is considered an adult, aged 20 to 30 years.

A period when a person is a child, aged 0 to 9 years.

A period when a person is considered elderly, aged 60 and above.

Correct Answer: A

Solution:

Adolescence is defined as the period when a person is no longer a child and not yet an adult, typically grouped in the age range of 10 to 19 years.

Movement of people within a country

Movement of people between countries

Both internal and external movement of people

Movement of people for employment

Correct Answer: C

Solution:

Migration refers to both internal and external movement of people.

The absolute number of people added each year is decreasing.

India's base population is very large, leading to significant absolute increases even at lower growth rates.

The birth rate has surpassed the death rate significantly.

Migration from other countries is the primary cause of population growth.

Correct Answer: B

Solution:

India's population continues to grow because even a low growth rate applied to a large base population results in a significant absolute increase.

It refers to a drainage system where rivers do not reach the ocean.

It is the scientific concept that explains the movements of the crustal plates.

It is the average number of years one is expected to live.

It is a narrow, shallow, elongated basin with a sinking bottom.

Correct Answer: B

Solution:

Plate tectonics is the scientific concept that explains the movements of the crustal plates.

It is the total population at the end of a given time period.

It is the total population at the beginning of a given time period.

It is the average population over a decade.

It is the population of a specific age group.

Correct Answer: B

Solution:

The base population refers to the total population of an area at the beginning of a given time period, which is used to calculate growth rates.

Decrease in population density

Increase in population growth rate

Decrease in dependency ratio

Increase in literacy rate

Correct Answer: B

Solution:

An increase in the birth rate with no change in death rate or migration will directly lead to an increase in the population growth rate, as more individuals are being added to the population through births.

High birth rates

High death rates

High life expectancies

More married couples

Correct Answer: A

Solution:

A large proportion of children in a population is typically due to high birth rates.

True or False

Correct Answer: True

Solution:

The birth rate is indeed defined as the number of live births per 1000 persons in a year.

Correct Answer: False

Solution:

A lagoon is a salt-water lake separated from the sea by sandbars and spits, not a freshwater lake.

Correct Answer: True

Solution:

Indian Standard Time is based on the local time along the Standard Meridian of India, which is 82°30'E.

Correct Answer: True

Solution:

Adolescence is defined as the period in which a person is no longer a child and not yet an adult, grouped in the age range of 10 to 19 years.

Correct Answer: False

Solution:

The sex-ratio is defined as the number of females per thousand males.

Correct Answer: True

Solution:

According to the Census, a 'literate' person is indeed defined as someone who can read and write any language with understanding and is at least 7 years old.

Correct Answer: False

Solution:

The growth rate of population can be measured annually or over a decade.

Correct Answer: True

Solution:

The dependency ratio is defined as the ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

Correct Answer: True

Solution:

Adolescence is defined as the period in which a person is no longer a child and not yet an adult, typically grouped in the age range of 10 to 19 years.

Correct Answer: False

Solution:

The growth rate of India's population increased until 1981 but has been declining since then.

Correct Answer: True

Solution:

A plateau is defined as an extensive elevated area of relatively flat land.

Correct Answer: True

Solution:

The Census defines a 'literate' person as someone who is at least 7 years old and can read and write any language with understanding.

Correct Answer: True

Solution:

Migration changes the number, distribution, and composition of the population in both the area of departure and arrival.

Correct Answer: False

Solution:

The growth rate of population can be measured annually or over a decade.

Correct Answer: True

Solution:

A large proportion of children in a population is a result of high birth rates.

Correct Answer: False

Solution:

The dependency ratio is actually the ratio of people of dependent age (below 15 and above 60 years) to people of economically active ages (15-59 years).

Correct Answer: False

Solution:

Migration affects both the area of departure and the area of arrival by changing the number, distribution, and composition of the population.

Correct Answer: False

Solution:

The sex-ratio is defined as the number of females per thousand males.

Correct Answer: True

Solution:

The birth rate is indeed the number of live births for every 1000 persons in a year.

Population

AI Learning Assistant

Summary

Summary of Population Dynamics in India

Key Points

Important Statistics

Definitions

Learning Objectives

Detailed Notes

Population Growth and Change

Key Concepts

Important Statistics

Factors Influencing Population Change

Components of Population Growth

Population Distribution

National Population Policy 2000

Census of India

Exam Tips & Common Mistakes

Common Mistakes and Exam Tips

Common Pitfalls

Tips for Exam Preparation

Practice & Assessment

Multiple Choice Questions

Q1.A city has a dependency ratio of 60%. If the economically active population is 1 million, what is the total population of the city?

Correct Answer: A

Q2.Which of the following geological features is characterized by a linear break in rocks of the earth's crust along which there has been displacement?

Correct Answer: B

Q3.Which of the following scenarios best illustrates the concept of 'dependency ratio'?

Correct Answer: C

Q4.What is the primary reason for high population density in the Northern Plains of India?

Correct Answer: B

Q5.What is the definition of 'birth rate'?

Correct Answer: A

Q6.What is the significance of the 'dependency ratio' in demographic studies?

Correct Answer: C

Q7.A large proportion of children in a population is a result of:

Correct Answer: A

Q8.What does the term 'biome' refer to?

Correct Answer: B

Q9.In the context of geological formations, what is a 'fault'?

Correct Answer: B

Q10.The growth rate of population is measured by comparing the increase in population with the:

Correct Answer: B

Q11.What is the term used for the movement of people from one place to another?

Correct Answer: B

Q12.Which of the following best describes the concept of 'base population' in demographic studies?

Correct Answer: B

Q13.In the context of population studies, which of the following best describes 'migration'?

Correct Answer: C

Q14.In the context of population studies, what is the primary reason for the uneven distribution of population across different regions in India?

Correct Answer: A

Q15.Consider a hypothetical country where the annual growth rate of population is 2%. If the base population is 500 million, what will be the population after 5 years assuming the growth rate remains constant?

Correct Answer: A

Q16.In the context of population studies, which of the following factors primarily contributes to a high population density in the Northern Plains of India?

Correct Answer: B

Q17.If the population of a country increases from 500 million to 550 million over a decade, what is the absolute increase in population?

Correct Answer: A

Q18.Migrations change the number, distribution, and composition of the population in:

Correct Answer: C

Q19.Which factor is most likely to cause a decrease in the growth rate of a population?

Correct Answer: B

Q20.In meteorology, what does the term 'depression' refer to?

Correct Answer: C

Q21.Which of the following factors is a major component of population growth in India?

Correct Answer: A

Q22.Which of the following best describes a lagoon?

Correct Answer: B

Q23.Which of the following best describes 'biome'?

Correct Answer: B

Q24.What does the term 'adolescence' refer to?

Correct Answer: A

Q25.Which of the following best describes the concept of 'biome'?

Correct Answer: B

Q26.Which of the following best explains the term 'dependency ratio'?

Correct Answer: C

Q27.What is the definition of 'density of population'?

Correct Answer: C

Q28.What is the definition of 'life expectancy'?

Correct Answer: A

Q29.Which of the following best describes an 'alluvial plain'?