Conservation of Plants and Animals Class 8 Extra Questions Science Chapter 7
Conservation of Plants and Animals Class 8 Extra Questions Very Short Answer Questions
Conservation Of Plants And Animals Class 8 Extra Questions Question 1.
What is sanctuary?
Answer:
An area where animals are protected from any disturbance to them and their habitat is called a sanctuary.
Class 8 Science Chapter 7 Extra Questions Question 2.
Name the major threat to the survival of organism.
Answer:
Deforestation
Conservation Of Plants And Animals Class 8 Worksheets With Answers Question 3.
Write the names of some parks and sanctuaries.
Answer:
Dudhwa National Park, Bharatpur Bird Sanctuary, Kaziranga National Park, Nelapattu Bird Sanctuary, etc.
Ch 7 Science Class 8 Extra Questions Question 4.
Write two natural causes of deforestation.
Answer:
- Severe droughts
- Forest fires
Conservation Of Plants And Animals Extra Questions Question 5.
Give examples of flora.
Answer:
Teak, sal, mango, jamun, arjun, etc.
Class 8 Science Ch 7 Extra Questions Question 6.
Give examples of fauna.
Answer:
Elephant, tiger, wild bear, etc.
Class 8 Science Chapter 7 Extra Questions And Answers Question 7.
Name two endemic fauna.
Answer:
Giant squirrel, bison
Class 8 Chapter 7 Science Extra Questions Question 8.
Name some forest products.
Answer:
Paper, wood, timber, vegetables, fruits, rubber, etc.
Ncert Class 8 Science Chapter 7 Extra Questions Question 9.
What is the name of the reserved land used to protect biodiversity?
Answer:
Biosphere Reserve
Class 8th Science Chapter 7 Extra Questions Question 10.
Name the first Reserve Forest of India.
Answer:
Satpura National Park
Questions On Conservation Of Plants And Animals Class 8 Question 11.
Name products obtained from animals for which they are hunted.
Answer:
Skin, fur, horn, eggs, flesh, etc.
Extra Questions Of Conservation Of Plants And Animals Question 12.
Does soil erosion affect the fertility of soil?
Answer:
Yes
Class 8 Science Chapter 7 Important Questions Question 13.
List the names of some migratory birds.
Answer:
- Siberian crane
- Bar-headed goose
- Arctic tern
- Surkhab
Extra Questions For Class 8 Science Chapter 7 Question 14.
Write the names of some extinct animals.
Answer:
Dodo, dinosaurs, mammoth, etc.
Class 8 Science Chapter 7 Extra Question Answer 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 Questions
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 Questions
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 de-creased 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 Higher Order Thinking Skills
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 Questions
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.
- Do you think we must use leather items for just show off?
- What is endangered species?
- Can you name an extinct species which was exploited for its meat?
- What values of people are shown in above paragraph?
Answer:
- No
- A species which is at higher risk of getting extinct is known as endangered species.
- Dodo
- 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 Soci-ety for the Protection of Animals (WSPA), etc.
(d) They are cruel, money-minded, selfish, reckless, etc.
Activities and Projects
Question 1.
Plant at least five different plants in your locality during this academic year and ensure their maintenance till they grow.
Answer:
Activity for home (Perform yourself).
Question 2.
Promise yourself that this year you will gift at least 5 plants to your friends and relatives on their achievements, or on occasions like birthdays. Ask your friends to take proper care of these plants and encourage them to gift plants to their friends on such occasions. At the end of the year count the plants that have been gifted through this chain.
Answer:
Activity for home (Perform yourself).
Question 3.
Is it justified to prevent tribals from staying in the core area of the forest? Discuss the matter in your class and note down the points for and against the motion in your notebook.
Answer:
In favour of motion: Yes, tribals must be prevent from staying in the core area of the forest because they will use most of the forest resources for their benefits. Their activities in forest may disturb wild animals. Cutting of trees by them may lead to habitat loss of animals. Their invasions in forest may scare wild animal out of forest. They can hunt wild animals for their benefits.
In against of motion: No, because tribals living near a forest area depends on various forest resources for their basic needs. They are poor. If they are dislocated then where will they go? They can play a major role in sustainable use of forest resources and its development. They can also be a part of controlling poachers and hunters from entering forests. They could be given jobs in forest in maintaining flora and fauna of the forest.
Question 4.
Study the biodiversity of a park nearby. Prepare a detailed report with photographs and sketches of the flora and fauna.
Answer:
Do it yourself.
Question 5.
Make a list of the new information you have gathered from this chapter. Which information did you find the most interesting and why?
Answer:
New information gathered from this chapter are:
- Different protected areas.
- How biodiversity helps in maintaining healthy ecosystem?
- How animals are categorised on the basis of conservation status?
- How deforestation are affecting wildlife?
- How can we conserve the wildlife?
I liked the information of how we can contribute towards conserving flora and fauna around us.
Question 6.
Make a list of various uses of papers. Observe currency notes carefully. Do you find any difference between a currency paper and paper of your notebook? Find out where currency paper is made.
Answer:
Papers are used in making newspapers, magazines, books, toys, paper lanterns, wrapping gifts, stuffing packages, gift bags, toilet paper, paper towels, etc.
Normal paper that you use on a day-to-day basis is made from the cellulose found in trees. Paper used for currency notes, on the other hand, is made from cotton and linen fibres. This kind of paper is known as rag paper and it does not disintegrate easily. The paper used for money is squeezed with thousands of pounds of pressure during the printing process.
Currency notes are printed at the Currency Note Press in Nashik, the Bank Note Press in Dewas, the Bharatiya Reserve Bank Note Mudran (P) Ltd at Salboni and Mysore and at the Watermark Paper Manufacturing Mill in Hoshangabad. The current series of bank notes (which began in 1996) is known as the Mahatma Gandhi series.
Question 7.
Karnataka Government had launched ‘Project Elephant’ to save Asian elephants in the state. Find out about this and other such campaigns launched to protect threatened species.
Answer:
‘Project Elephant’ was launched in 1992 by the Govt, of India, Ministry of Environment and Forests to provide financial and technical support of wildlife management efforts by states for their free ranging populations of wild Asian Elephants. The project aims to ensure long-term survival of viable conservation reliant populations of elephants in their natural habitats by protecting the elephants, their habitats and migration corridors. Other goals of Project Elephant are supporting research of the ecology and management of elephants, creating conservation awareness among local people, providing improved veterinary care for captive elephants.
Project Elephant (PE) was launched by the Government of India in the year 1992 as a Centrally Spon-sored Scheme with following objectives:
- To protect elephants, their habitat and corridors
- To address issues of man-animal conflict
- Welfare of captive elephants
Some other such campaigns launched to protect threatened species are:
- Project tiger (India)
- Sanke birds (Kerala)
- My Ganga, My Dolphin (Uttar Pradesh)
- National Bear Conservation and Welfare Action Plan (India)
I. Multiple Choice Questions (MCQs)
Choose the correct option.
Question 1.
The clearing of forests is referred to as
(a) reforestation
(b) desertification
(c) deforestation
(d) sanitation
Question 2.
Deforestation leads to
(a) an increase in the temperature of the earth
(b) imbalance of O2 and CO2
(c) increase in rainfall
(d) both (a) and (b)
Question 3.
Which of the following gases is needed by plants for photosynthesis?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Sulphur
Question 4.
Name the process undertaken by plants for preparing their own food.
(a) Industrialisation
(b) Photosynthesis
(c) Stealing
(d) Sterilisation
Question 5.
An increase in the amount of carbon dioxide results in
(a) winter season
(b) global warming
(c) rainfall
(d) all of these
Question 6.
The reduction in rainfall could cause
(a) droughts
(b) cold
(c) greenery
(d) none of these
Question 7.
The removal of top layer of soil leads to
(a) desertification
(b) rainfall
(c) snowfall
(d) deforestation
Question 8.
Name the sphere that supports life, and where living organisms exist.
(a) Atmosphere
(b) Lithosphere
(c) Biosphere
(d) None of these
Question 9.
The variety of organisms living on the earth, is referred to as
(a) biodiversity
(b) food chain
(c) lithosphere
(d) relationship
Question 10.
Name a biosphere reserve where the plants and animals are similar to those of the upper Himalayan ranges and lower western ghats.
(a) Nanda Devi Biosphere Reserve
(b) Kaziranga Biosphere Reserve
(c) Pachmarhi Biosphere Reserve
(d) Dudhwa National Park
Question 11.
Which of the following activities are prohibited in national parks, sanctuaries and biosphere reserves?
(a) Poaching
(b) Hunting
(c) Felling trees
(d) All of these
Question 12.
Name the areas where animals are protected from any disturbance to them and their habitat.
(a) Sanctuary
(b) Biodiversity
(c) Palaces
(d) Beach
Question 13.
Name the areas reserved for wildlife where they can freely use the habitats and national resources.
(a) National parks
(b) Sanctuary
(c) Oceans
(d) Homes
Question 14.
Large areas of protected land for conservation of wildlife, plant and animal resources and traditional life of the tribals living in the area are referred to as
(a) biosphere reserves
(b) sanctuaries
(c) national parks
(d) all of these
Question 15.
The Pachmarhi Biosphere Reserve consists one national park named
(a) bori
(b) satpura
(c) anand
(d) dudhwa
Question 16.
The Pachmarhi Biosphere Reserve consists two wildlife sanctuaries named
(a) Bori and Pachmarhi
(b) Pachmarhi and Satpura
(c) Satpura and Bori
(d) none of these
Question 17.
The plants found in a particular area are termed as
(a) flora
(b) fauna
(c) species
(d) all of the above
Question 18.
The animal found in a particular area are termed as
(a) flora
(b) fauna
(c) dogs
(d) humans
Question 19.
Those species of plants and animals that are found exclusively in a particular area are termed as
(a) endemic species
(b) exclusive species
(c) particular species
(d) significant species
Question 20.
The killing of animals illegally is referred to as
(a) assassinating
(b) poaching
(c) killing
(d) hunting
Answer:
1. (c)
2. (d)
3. (c)
4. (b)
5. (b)
6. (a)
7. (a)
8. (c)
9. (a)
10. (c)
11. (d)
12. (a)
13. (a)
14. (a)
15. (b)
16. (a)
17. (a)
18. (b)
19. (a)
20. (b)
II. Fill in the Blanks
Fill in the blanks with suitable word/s.
1. _________ is an endemic flora of the Pachmarhi Biosphere Reserve.
2. _________ is a group of population which are capable of interbreeding.
3. _________ is also a place where animals receive protection.
4. _________ is the first Reserve Forest of India.
5. _________ was launched by the government to protect the tigers in India.
6. Animals whose numbers are diminishing to such a level that they might face extinction are called _________ animals.
7. A/an _________ is made of all the plants, animals and microbes in an area with non-living components such as climate, soil, river, deltas, etc.
8. _________ is a source book which keeps records of all the endangered plants and animals.
9. _________ birds fly to far away areas every year during a particular time because of climatic changes.
10. The restocking of destroyed forests by planting new trees is known as _________.
11. We should save, reuse and _________ paper to save trees, energy and water.
12. Paper can be recycled _________ to _________ times.
13. Revised Forest Policy of 1952 is called _________.
14. Kaziranga is a _________.
15. Passenger pigeon is one of the _________ species.
16. The main example of Biosphere Reserve is _________.
17. The cutting of trees is called _________.
18. Satpura National Park is a part of _________ Biosphere Reserve.
19. Corbett National Park is located at _________.
20. The causes of deforestation have been _________ and _________.
Answer:
1. Wild mango
2. Species
3. Zoo
4. Satpura National Park
5. Project Tiger
6. endangered
7. ecosystem
8. Red Data Book
9. Migratory
10. reforestation
11. recycle
12. 5,7
13. Forest Act, 1980
14. National Park
15. extinct
16. Pachmarhi Biosphere Reserve
17. deforestation
18. Pachmarhi
19. Uttarakhand
20. Forest fires, severe drought
III. Match the following
Match the items given in column I suitably with those given in column II.
Answer:
1. (b)
2. (d)
3. (a)
4. (e)
5. (c)
6. (g)
7. (i)
8. (f)
9. (j)
10. (h)
IV. True or False
State whether the given statements are true or false.
1. Kaziranga National Park is situated in Bihar.
2. Reforestation increases the temperature and pollution level on earth.
3. Global warming is caused due to the increase in the level of oxygen.
4. The reduction in rainfall could cause droughts.
5. Red Data Book keeps a record of all endangered plants and animals.
6. The project Tiger was launched on December 2, 2004.
7. Dodo is an extinct species.
8. In a wildlife sanctuary, a limited human activity is allowed.
9. IUCN stands for International Union for Conservation of Nature.
10. In India, protected forests cover about 25% of the total forest area.
11. Wildlife sanctuary and national park are protected areas.
12. Those species which no longer exist on the earth are known as endemic species.
13. Private ownership is not allowed in the national parks.
14. There can be a wildlife sanctuary within a biosphere reserve.
15. A famous wildlife sanctuary situated in Kerala is Periyar Wildlife Sanctuary.
Answer:
1. False
2. False
3. False
4. True
5. True
6. False
7. True
8. True
9. True
10. False
11. True
12. False
13. True
14. True
15. True