NCERT Class VIII Science Solutions: Chapter 7-Conservation of Plants and Animals Part 3

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Question 14:

State whether the following statements are true or false. Correct the false statements.

  1. There can be a wildlife sanctuary within a biosphere reserve.

  2. Plants of a particular area are collectively termed as fauna.

  3. Deforestation leads to an increase in the water holding capacity of the soil.

  4. Bison is an endemic fauna of Pachmarhi Biosphere Reserve.

Answer:

  1. There can be a wildlife sanctuary within a biosphere reserve. (True)

  2. Plants of a particular area are collectively termed as fauna. (False)

    Hint: Plants of a particular area are collectively termed as fauna

  3. Deforestation leads to an increase in the water holding capacity of the soil. (False)

    Hint: Deforestation leads to an increase in the water holding capacity of the soil

  4. Bison is an endemic fauna of Pachmarhi Biosphere Reserve. (True)

Question 15:

Can a forest regenerate naturally in a short period of time?

Answer:

Reforestation can take place naturally by leaving the deforested area undisturbed for a long time. But this process takes a long time in terms of years.

Image of what is reforestation

Image of What is Reforestation

Image of what is reforestation

Question 16:

Name the first Reserve Forest of India.

Answer:

Satpura National Park

SHORT ANSWER QUESTIONS

Question 17:

Why are wildlife sanctuaries important for conservation of plants and animals?

Answer:

Wildlife sanctuaries are protected areas where human activities like plantation, cultivation, grazing, falling of trees, hunting and poaching are prohibited completely

Question 18:

Why are endemic organisms in greater danger of becoming extinct?

Answer:

Endemic organisms are confined to a limited geographical area. They cannot adapt or live outside their natural habitat. Any disturbance to their habitat will adversely affect them.

Question 19:

How are even small animals important in an ecosystem?

Answer:

Even small organisms are important in an ecosystem because every organism forms a part of a food chain/food web/ecosystem.

Image of ecosystem

Image of Ecosystem

Image of ecosystem

Question 20:

A new species X is introduced in a forest. How is it likely to affect the local species of that area?

Answer:

Introduction of a new species may affect the existence of local species due to competion.