Conservation of Plants and Animals Class 8 Extra Questions and Answers Science Chapter 7

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In this page, we are providing Conservation of Plants and Animal Class 8 Extra Questions and Answers Science Chapter 7 pdf download. NCERT Extra Questions for Class 8 Science Chapter 7 Conservation of Plants and Animal with Answers will help to score more marks in your CBSE Board Exams.

Class 8 Science Chapter 7 Extra Questions and Answers Conservation of Plants and Animal

Extra Questions for Class 8 Science Chapter 7 Conservation of Plants and Animal with Answers Solutions

Conservation of Plants and Animal Class 8 Extra Questions Very Short Answer Type

Question 1.
What is sanctuary?
Answer:
An area where animals are protected from any disturbance to them and their habitat is called a – sanctuary.

Question 2.
Name the major threat to the survival of organism.
Answer:
Deforestation

Question 3.
Write the names of some parks and sanctuaries.
Answer:
Dudhwa National Park, Bharatpur Bird Sanctuary, Kaziranga National Park, Nelapattu Bird Sanctuary, etc.

Question 4.
Write two natural causes of deforestation.
Answer:

  • Severe droughts
  • Forest fires

Question 5.
Give examples of flora.
Answer:
Teak, sal, mango, jamun, arjun, etc.

Question 6.
Give examples of fauna.
Answer:
Elephant, tiger, wild bear, etc.

Question 7.
Name two endemic fauna.
Answer:
Giant squirrel, bison

Question 8.
Name some forest products.
Answer:
Paper, wood, timber, vegetables, fruits, rubber, etc.

Question 9.
What is the name of the reserved land used to protect biodiversity?
Answer:
Biosphere Reserve

Question 10.
Name the first Reserve Forest of India.
Answer:
Satpura National Park

Question 11.
Name products obtained from animals for which they are hunted.
Answer:
Skin, fur, horn, eggs, flesh, etc.

Question 12.
Does soil erosion affect the fertility of soil?
Answer:
Yes

Question 13.
List the names of some migratory birds.
Answer:

  • Siberian crane
  • Bar-headed goose
  • Arctic tern
  • Surkhab

Question 14.
Write the names of some extinct animals.
Answer:
Dodo, dinosaurs, mammoth, etc.

Question 15.
When was Project Tiger launched?
Answer:
April 1,1973

Question 16.
How many rock shelters are there in Pachmarhi Biosphere Reserve?
Answer:
55

Question 17.
Name two wildlife sanctuaries present in Pachmarhi Biosphere Reserve.
Answer:
Pachmarhi, Bori

Question 18.
What is the plantation of new plants called?
Answer:
Reforestation

Question 19.
What is a zoo?
Answer:
A place where animals receive protection is called a zoo.

Question 20.
Name one reason owing to which birds migrate.
Answer:
For breeding

Conservation of Plants and Animals Class 8 Extra Questions Short Answer Type

Question 1.
What do you mean by deforestation?
Answer:
The cutting of trees on a large scale is called deforestation.

Question 2.
Define national park.
Answer:
A national park is an area reserved for wildlife where they can freely use the habitats and natural resources.

Question 3.
What are flora?
Answer:
The plant species found in a particular area are called flora.

Question 4.
What are fauna?
Answer:
The animal species found in a particular area are called fauna.

Question 5.
What do you mean by species?
Answer:
Species is a group of population which are capable of interbreeding.

Question 6.
What is Satpura Tiger Reserve?
Answer:
It is a Project Tiger which was launched by the government in the country to protect the tigers.

Question 7.
What are endangered animals?
Answer:
The animals whose numbers are diminishing to such a level that they might face extinction are known as ‘endangered animals.’

Question 8.
Define ‘Red Data Book.’
Answer:
A book that keeps records of all the endangered plant and animal species is called a Red Data Book.

Question 9.
Define migratory birds.
Answer:
The birds which cover long distances to reach another land for some reasons are known as migratory birds.

Question 10.
Mention the causes of deforestation.
Answer:
The cause of deforestation could be:

  • Forest fires
  • Building houses, factories
  • Severe droughts
  • Using wood for some purposes
  • Human encroachment and procuring land for cultivation

Question 11.
What do you mean by desertification?
Answer:
The conversion of fertile land into deserts is called desertification.

Question 12.
What is biodiversity?
Answer:
The diversity of plant and animal life in a particular habitat (or in the world as a whole) is called bio-diversity.

Question 13.
Define biosphere.
Answer:
Biosphere is that part of the earth in which living organisms exist or which supports biological diver-sity.

Question 14.
Define endemic species.
Answer:
The species of plants and animals which are found exclusively in a particular area are called endemic species.

Question 15.
Explain the term ecosystem.
Answer:
Ecosystem is a system formed by the interaction of a community of organisms with their physical environment.

Conservation of Plants and Animals Class 8 Extra Questions Long Answer Type

Question 1.
How does deforestation lead to frequent floods and droughts?
Answer:
Deforestation results in decreased water holding capacity of soil. This reduces the infiltration of water into the ground which causes floods. On the other hand, deforestation leads to higher level of carbon dioxide in the atmosphere which causes global warming. Scarcity of trees disturbs the water cycle and may reduce rainfall leading to droughts.

Question 2.
Explain how deforestation associated with global warming.
Answer:
Plants absorb carbon dioxide from the atmosphere for photosynthesis. Deforestation results in decreased number of trees leading to accumulation of carbon dioxide in the atmosphere. Carbon dioxide in the atmosphere traps heat rays reflected by the earth which results in global warming.

Question 3.
What do you mean by Biosphere Reserve?
Answer:
Biosphere Reserve is a large area of protected land for the conservation of wildlife, plant and animal resources and traditional life of the tribals living in that area.

Question 4.
How can we protect wildlife?
Answer:
Wildlife plays a significant role in maintaining a balance in the environment. They can be protected by establishing secured and protected area, which are restricted for human activities that are against the protection of wildlife. Cutting of trees, hunting, poaching are strictly banned there. Many of these areas are national parks and wildlife sanctuaries.

Question 5.
Why is the conservation of biodiversity important?
Answer:
Because of the following reasons, the conservation of biodiversity is important:

  • It boosts tourism and thus, plays a significant role in enhancing the economy of the country.
  • It maintains the fertility of soil.
  • It helps in maintaining the ecological balance on the earth.
  • Biodiversity is a rich source for the study of genetics and evolution.
  • It helps in maintaining the weather by regulating climatic changes, rainfall, etc.

Question 6.
What are ‘rare species’? Give examples.
Answer:
Rare species are uncommon and scarce, that is to say, their population is very small. Major steps are to be taken for their conservation and protection so that they may not fall under the category of endangered or extinct species; e.g., wild buffalo, Bengal fox, gaur, marbled cat, etc.

Question 7.
What is Van Mahotsav? Who started it and when?
Answer:
Van Mahotsav is an annual tree-planting festival in India. This movement was initiated in the year 1950 by India’s Union Minister for Agriculture, Kulapati Dr K. M. Munshi. It has gained immense national importance and every year, millions of saplings are planted all across India in observation of the Van Mahotsav week. It is expected that every citizen of India has to plant a sapling in the Van Mahotsav week. It helps spread awareness amongst people about the harm caused by the cutting down of trees.

Conservation of Plants and Animals Class 8 Extra Questions HOTS

Question 1.
Why does it matter if a species go extinct?
Answer:
When a species go extinct, with it the whole food web get disturbed due to inter-relationship and interaction between organisms. The species of organisms which might have been dependent on the extinct species for food may also get extinct due to starvation until it get an alternate option. If the dependent species shift its choice of food on another species then there might be a competition for food with other species. Thus, in a nutshell, a extinct species affect the whole ecosystem.

Question 2.
Can a forest regenerate naturally in a short period of time?
Answer:
No, a forest takes a very long time for its growth and survival.

Question 3.
Mention the aim of Forest (Conservation) Act.
Answer:
Its aim were — conservation of natural forests and meeting the basic needs of the people living in or near the forests.

Question 4.
How are even small animals important in an ecosystem?
Answer:
Even very small animals form a part of food chain/food web in an ecosystem.

Question 5.
What is the affect of introduction of an exotic species to an ecosystem?
Answer:
Exotic species may affect the existence of local species either through predation or competition.

Conservation of Plants and Animals Class 8 Extra Questions Value Based (VBQs)

Question 1.
Many people in world find it status symbol of wearing and keeping leather clothes and leather articles with them. Even Shahtoosh shawls made of an endangered species of antelope are also in greater demand and highly priced.
(a) Do you think we must use leather items for just show off?
(b) What is endangered species?
(c) Can you name an extinct species which was exploited for its meat?
(d) What values of people are shown in above paragraph?
Answer:
(a) No
(b) A species which is at higher risk of getting extinct is known as endangered species.
(c) Dodo
(d) They are class conscious, selfish, irresponsible to nature, cruel, etc.

Question 2.
For centuries human activities such as hunting and encroachment have led to degradation of forests and extinction of many species of plants and animals. Government of India has taken many steps to conserve forests and wildlife. But this movement will not be a success without the involvement of all of us.
(a) What products are obtained from forests and wildlife?
(b) How can we help in conserving forest and wildlife?
(c) Can you name some organisation which are working against killing or poaching of animals?
(d) What values of human are shown here towards nature?
Answer:
(a) From forests: Wood for fire, timber, furniture, medicines, forage for livestock, gums, raisins, pa-pers, etc.
From wildlife: Horns, skin, leather, fur, ivory, meat, fin, etc.
(b)

  • By saying ‘No’ to animal products we can at least reduce their hunting and poaching.
  • By not cutting the trees and planting more saplings we can help in restoring the natural habitat of wild animals.
  • By creating awareness among people about importance of forests and wildlife.

(c) World Wide Fund for Nature (WWF), International Fund for Animal Welfare (IFAW), World Society for the Protection of Animals (WSPA), etc.
(d) They are cruel, money-minded, selfish, reckless, etc.