CBSE Class 8 Social Science Dynamics of Population (Class 8 NCERT New) Quiz 2

1. Why is it important to study population dynamics?

A To learn about ancient civilizations B To improve cooking skills C To predict the weather accurately D To understand how populations change over time and make informed decisions related to resource management, conservation, public health, and urban planning.

2. How can governments address the challenges of overpopulation?

A Limit access to healthcare B Implement family planning programs, promote education especially for women, improve access to healthcare, incentivize smaller families, and invest in sustainable development. C Encourage larger families D Ignore the issue and hope it resolves itself

3. Compare and contrast the population pyramids of a developed country and a developing country.

A Population pyramids of developed countries have a more uniform distribution across age groups with a narrower base and top, while population pyramids of developing countries have a wider base and narrower top. B Population pyramids of both developed and developing countries have a similar age distribution. C Developed countries have a wider base in their population pyramids compared to developing countries. D Developing countries have a more uniform distribution across age groups in their population pyramids.

4. The maximun number of individuals of a population that a habitat can support is called ________________.

A Limiting factors B Carrying capacity

5. Environmental factors that restrict the growth of populations are called _________________.

A Limiting factors B Carrying capacity

6. Limitations to population growth that vary with population density.

A Carrying capacity B Density depending factors

7. The depending factors that limit the population growth are avaliability of food, water competition, ___________ and predation.

A mining B deforestation C disease

8. When the wolves were eliminated from Yellowstone National Park, deer and elk population ___________ with no predator to reduce them.

A decreased B soared C didn't change

9. Populations can be affected by ______________ which are organisms that cause disease.

A scavenger B pathogens C herbivores

10. Which of the following factors is most likely to cause a population to increase?

A Loss of habitat B Increase in predators C Abundant food and water supply D Spread of disease