Learn Class 8 Science - Conservation of Plants and Animals

For conserving plants and animals, sanctuaries, national parks, biosphere reserves are maintained.

Wildlife sanctuaries

It is an area away from wild animals where they can use natural resources and roam freely. Protected areas play an immense role in the conservation of endangered species. For example, in Assam, there is the Kaziranga Wildlife Sanctuary to protect rhinos. They are allowed to breed there. Hunting, killing, and poaching of organisms is strictly prohibited in the sanctuaries. There are 564 protected areas in India.

National parks

A vast area with enough space to preserve the totality of ecosystems is called a national park. It protects the fauna, flora, landscape and historical ecosystem of the area. There are 106 national parks in India. Ex. Kanha National Park in Rajasthan.

Biosphere reserve

A biosphere reserve is a widely protected area that preserves the biological diversity and culture of a specific area. It includes marine, coastal and terrestrial ecosystems. In addition, biosphere reserves are learning sites for sustainable development. There are 18 biosphere reserves in India.

Deforestation

Cutting down trees and clearing land for other purposes is called deforestation. Today, deforestation is the biggest threat to wildlife. This is because deforestation leads to the destruction of the dwellings of wildlife. This makes it difficult for organisms to survive.

Conservation of Plants and Animals Sample Questions for Class 8

Question 1

The introduction of exotic species into an area:
A. helps to conserve wildlife
B. helps to protect biodiversity
C. affects native species adversely
D. helps native species survive

Question 2

Which of the following shows a modern technology measures that is used to preserve and conserve the environment?
A. Practising crop rotation
B. Using leaded petrol in motor vehicles
C. Using machines in agricultural industry
D. Converting industrial wastes into biogas

Question 3

Which of the following include all living organisms and all life supporting regions of the earth?
A. biosphere
B. ionosphere
C. stratosphere
D. lithosphere

Question 4

Drought brings about:
A. flooding
B. volcanic eruptions
C. decreased production of food
D. increased photosynthesis in plants

Question 5

Which of the following must be practised to preserve and conserve the environment?
A. Deforestation
B. Recycling
C. Soil erosion
D. Increase in pollution