Class 8th Science Chapter 5 Conservation of Plants and Animals

Class 8 Science - Conservation of Plants and Animals

1. Fill in the blanks with correct words.

(a) What is the name of a place where animals are protected in their natural habitat?

Wildlife sanctuary

(b) What do we call species that are found only in a particular area?

Endemic species

(c) Why do migratory birds fly to faraway places?

Climatic changes

2. Write the differences between the following.

(a) What is the difference between a wildlife sanctuary and a biosphere reserve?

• Wildlife Sanctuary: Only animals are protected.
• Biosphere Reserve: Protects animals, plants, and nature.

(b) How is a zoo different from a wildlife sanctuary?

• Zoo: Animals are kept in cages or artificial homes.
• Wildlife Sanctuary: Animals live freely in natural forests.

(c) What is the difference between endangered and extinct species?

• Endangered: Very few are left, may disappear soon.
• Extinct: No more of that species are alive.

(d) How are flora and fauna different?

• Flora: All plants in a region.
• Fauna: All animals in a region.

3. What are the effects of deforestation on the following?

(a) Wild animals: They lose their homes and food sources.
(b) Environment: Causes more pollution and heat.
(c) Villages (Rural areas): Reduces farming quality and water sources.
(d) Cities (Urban areas): Less fresh air, more dust and heat.
(e) Earth: Increases carbon dioxide and global warming.
(f) Next generation: Faces poor air, climate change, and loss of resources.

4. What will happen in the following situations?

(a) What will happen if we go on cutting trees? — Air pollution increases and animals lose their homes.
(b) What will happen if the habitat of an animal is disturbed? — Animals may die or leave the area.
(c) What will happen if the top layer of soil is exposed? — Soil becomes dry and farming becomes difficult.

5. Answer the following questions briefly.

(a) Why should we conserve biodiversity? — Biodiversity keeps nature balanced. We get food and medicine from plants and animals.
(b) Why are protected forests not completely safe for wild animals? — People may still harm animals or cut trees in protected forests.
(c) How do some tribal people depend on the jungle? — Tribals use forests for food, wood, and farming. Forest is their home.
(d) What are the causes and consequences of deforestation? — Causes: Tree cutting. Consequences: Less rain, soil loss, animal danger.
(e) What is Red Data Book? — It is a book that lists endangered and extinct species of plants and animals.
(f) What do you understand by the term migration? — Migration means moving to other places for better weather or food.

6. Do you think it is right to cut trees for making factories and houses?

No, it harms nature. We must plant trees and use land carefully for development and forest safety.

7. How can you help in saving and growing more trees in your area?

• Plant more trees.
• Do not waste paper.
• Join tree-planting drives.
• Protect local parks and gardens.

8. How does cutting down trees reduce rainfall?

Trees release moisture into the air. Without them, clouds form less, and rainfall decreases.

9. Can you name some national parks in your state and show them on a map?

Example (Punjab): Harike Wetland and Abohar Sanctuary. They are marked on the India map under Punjab.

10. Why should we save paper?

Paper is made from trees. Save paper by using both sides and recycling old notebooks to save trees.