Here are 20 important CBSE Class 12 Geography (Fundamentals of Human Geography, Chapter 2: The World Population) questions and answers.
Q1. What is meant by population distribution? Explain its characteristics.
Answer:
Population distribution refers to the way people are spread across the Earth’s surface. It shows that population is not evenly distributed and varies from one place to another. Some regions are densely populated like South and East Asia, while others such as deserts, polar regions, and high mountains are sparsely populated. The distribution depends on physical factors like climate, relief, soil fertility, and availability of water, as well as human factors like economy, technology, and culture. For example, fertile river valleys attract more population than arid regions. Thus, population distribution helps us understand settlement patterns and human interaction with the environment in different parts of the world.
Q2. What is population density? How is it calculated?
Answer:
Population density refers to the number of people living per unit area of land, usually expressed as persons per square kilometre. It helps in understanding how crowded or sparsely populated a region is. It is calculated using the formula: Population Density = Total Population ÷ Total Land Area. For example, if a country has a population of 10 million and an area of 100,000 sq. km, the density will be 100 persons per sq. km. Population density varies greatly across the world due to differences in physical environment, resources, and development levels. High density areas indicate pressure on resources, while low density areas suggest underutilised land or harsh living conditions.
Q3. What are the main factors affecting population distribution?
Answer:
Population distribution is influenced by both physical and human factors. Physical factors include climate, landforms, soil, water availability, and natural resources. For example, moderate climate and fertile soil attract dense populations, while deserts and polar regions have sparse populations. Human factors include economic development, industrialisation, urbanisation, and technological advancement. Regions with better job opportunities and infrastructure attract more people. Historical and political factors also play a role, such as government policies and migration patterns. Accessibility and transportation facilities further influence settlement. Thus, population distribution is a result of the combined effect of natural environment and human activities over time.
Q4. What is population growth? Explain its types.
Answer:
Population growth refers to the change in the number of people in a region over a specific period of time. It can be positive or negative depending on whether the population increases or decreases. There are two main types of population growth: natural growth and actual growth. Natural growth occurs when the number of births exceeds deaths in a population. Actual growth includes natural growth along with migration, which is the movement of people in and out of a region. Population growth is influenced by fertility rate, mortality rate, and migration. Rapid population growth can create pressure on resources, while slow growth may indicate ageing population or low fertility rates.
Q5. What is the Demographic Transition Theory?
Answer:
The Demographic Transition Theory explains the transformation of population growth over time as a country develops economically. It divides population change into three stages. In Stage I, both birth and death rates are high, resulting in slow population growth. In Stage II, death rates decline due to better healthcare and sanitation, while birth rates remain high, leading to rapid population growth. In Stage III, both birth and death rates are low, and population growth stabilises. This theory shows how societies move from traditional to modern patterns of population growth. It helps in understanding population trends and planning for resources and development.
Q6. What is fertility rate? Why is it important?
Answer:
Fertility rate refers to the average number of children born to a woman during her reproductive years (15–49 years). It is an important indicator of population growth because it directly affects the number of births in a population. High fertility rates lead to rapid population growth, while low fertility rates result in slower growth or even population decline. Fertility is influenced by factors such as education, economic conditions, cultural practices, marriage age, and access to healthcare. Governments monitor fertility rates to plan for education, healthcare, and employment needs. It plays a key role in demographic studies and population policies.
Q7. What is mortality rate? Explain its significance.
Answer:
Mortality rate refers to the number of deaths occurring in a population during a specific period, usually expressed per 1,000 people per year. It is an important demographic indicator used to measure the health and living conditions of a population. High mortality rates generally indicate poor healthcare, malnutrition, and low living standards, while low mortality rates reflect better medical facilities and improved quality of life. Infant mortality rate, which measures deaths of children under one year, is especially significant. Changes in mortality rate directly affect population growth and help governments design health and welfare policies.
Q8. What is migration? Explain its types.
Answer:
Migration refers to the movement of people from one place to another with the intention of settling temporarily or permanently. It plays a major role in population distribution and growth. There are two main types of migration: internal migration and international migration. Internal migration occurs within a country, such as rural to urban movement. International migration involves movement between countries. Migration can also be classified as voluntary or forced. Voluntary migration occurs for better job opportunities or education, while forced migration happens due to wars, disasters, or political reasons. Migration affects both the place of origin and destination.
Q9. What are the causes of rural to urban migration?
Answer:
Rural to urban migration is mainly caused by economic, social, and environmental factors. Economic reasons include lack of employment opportunities in rural areas and better job prospects in cities. Urban areas offer higher wages, better infrastructure, and industrial jobs. Social factors include better education, healthcare, and living standards in cities. Environmental factors such as droughts, floods, and land degradation also push people to migrate. Additionally, modern transportation and communication systems make migration easier. This movement leads to rapid urbanisation, but it also creates problems like overcrowding, slums, and pressure on urban resources.
Q10. What is population pyramid? Explain its types.
Answer:
A population pyramid is a graphical representation that shows the age and sex structure of a population. It helps in understanding the demographic characteristics of a country. There are three main types of population pyramids. The first is expansive, which has a wide base indicating high birth rates and a large young population. The second is stationary, which shows balanced birth and death rates, indicating stable population growth. The third is constrictive, with a narrow base showing low birth rates and an ageing population. Population pyramids are useful for planning healthcare, education, and employment policies.
Q11. What is density of population and its types?
Answer:
Density of population refers to the number of people living in a unit area of land. It is a key measure used to understand how population is spread across regions. There are three main types of population density. Arithmetic density is the total population divided by total land area. Physiological density measures the number of people per unit area of arable land, showing pressure on productive land. Agricultural density refers to the number of farmers per unit of cultivated land. Each type provides different insights into population pressure and land use patterns, helping in better planning and resource management.
Q12. What are the effects of high population growth?
Answer:
High population growth has both positive and negative effects, but in developing countries, negative impacts are more common. It leads to pressure on natural resources such as land, water, and forests. It increases unemployment due to limited job opportunities. Rapid population growth also puts strain on infrastructure like housing, healthcare, and education systems. Environmental problems such as pollution and deforestation increase. However, a large population can also provide a bigger workforce and market for goods if properly managed. Therefore, balanced population growth is necessary for sustainable development and economic stability.
Q13. What is population ageing? Explain its consequences.
Answer:
Population ageing refers to an increase in the proportion of elderly people in a population. It occurs due to declining birth rates and increasing life expectancy. Developed countries often face this issue. The consequences include a higher dependency ratio, as fewer working-age people support more elderly people. It increases the demand for healthcare and social security systems. Governments face higher expenditure on pensions and medical facilities. However, elderly people also contribute through experience and knowledge. Population ageing requires policies focused on healthcare improvement, retirement planning, and support systems for the elderly.
Q14. What is sex ratio? Why is it important?
Answer:
Sex ratio refers to the number of females per 1,000 males in a population. It is an important demographic indicator that reflects social conditions and gender equality in a society. A balanced sex ratio indicates social stability, while a low sex ratio may indicate gender discrimination, female foeticide, or poor health conditions for women. Sex ratio is influenced by birth rates, death rates, and migration patterns. It is important for planning social services, understanding population structure, and ensuring gender equality. Governments use it to design policies for women’s welfare and empowerment.
Q15. What are the causes of uneven population distribution in the world?
Answer:
Population is unevenly distributed across the world due to physical, economic, and human factors. Physical factors include climate, relief, soil, and water availability. Fertile plains and river valleys attract dense populations, while deserts and mountains remain sparsely populated. Economic factors such as industrialisation, employment opportunities, and urban development also influence distribution. Human factors like culture, history, and political stability play a role as well. Regions with better infrastructure and living conditions attract more people. Thus, the combination of natural environment and human development leads to uneven population distribution globally.
Q16. What is life expectancy? What factors affect it?
Answer:
Life expectancy refers to the average number of years a person is expected to live based on current mortality rates. It is an important indicator of a country’s health and development. Higher life expectancy reflects better healthcare, nutrition, and living standards. Factors affecting life expectancy include quality of healthcare services, availability of food and clean water, education, sanitation, and economic development. Environmental conditions and lifestyle choices also play a role. Developed countries generally have higher life expectancy compared to developing countries due to better facilities and lower disease rates.
Q17. What is population policy? Why is it needed?
Answer:
Population policy refers to government measures aimed at influencing population size, growth, and distribution. It is needed to maintain a balance between population and available resources. Rapid population growth can create problems like unemployment, poverty, and environmental degradation. Population policies focus on family planning, education, healthcare, and awareness programs. They aim to control fertility rates and improve quality of life. Countries adopt population policies to ensure sustainable development, economic stability, and better living standards for their citizens.
Q18. What is urbanisation? Explain its causes.
Answer:
Urbanisation refers to the increasing proportion of population living in urban areas. It is caused by both push and pull factors. Push factors include unemployment, poverty, and lack of facilities in rural areas. Pull factors include better job opportunities, education, healthcare, and infrastructure in cities. Industrialisation also attracts people to urban centres. Improved transportation and communication systems support migration. Urbanisation leads to economic development but also causes problems like overcrowding, pollution, and slum formation if not managed properly.
Q19. What is dependency ratio? Explain its importance.
Answer:
Dependency ratio refers to the proportion of dependents (children and elderly people) compared to the working-age population. It is expressed as a percentage. A high dependency ratio means more burden on the working population to support dependents. It is important for understanding economic pressure on a country. Governments use it for planning education, healthcare, and employment policies. A lower dependency ratio is generally beneficial for economic growth as more people are economically productive. It helps in assessing social and economic development levels.
Q20. How does population affect development?
Answer:
Population plays a major role in the development of a country. A large population can be an asset if it is skilled and productive, as it provides a strong workforce and market. However, if population growth is too rapid, it can create pressure on resources, infrastructure, and employment opportunities. It may lead to poverty, inequality, and environmental degradation. Balanced population growth supports sustainable development. Education, healthcare, and skill development are important to convert population into human capital. Thus, population can either promote or hinder development depending on its management.