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Ncert Exemplar Solutions Class 8 Science Conservation of Plants and Animals
Welcome to NCTB Solutions. Here with this post we are going to help 8th class students for the Solutions of NCERT Exemplar Class 8 Science Book, Unit 7, Conservation of Plants and Animals. Here students can easily find step by step solutions of all the problems for Conservation of Plants and Animals, Also here our Science teacher’s are solved all the questions with easily understandable language with proper guidance so that all the students can understand easily.
Conservation of Plants and Animals all Question Solutions :
Multiple Choice Questions :
Question no – (1)
Wild buffalo is an endangered species because
Answer :
Correct option – (a)
Wild buffalo is an endangered species because its population is diminishing.
Question no – (2)
Which one of the following changes may occur due to desertification?
Answer :
Correct option – (d)
Conversion of fertile land into a desert may occur due to desertification.
Question no – (3)
Which one of the following statements is true about a Biosphere Reserve?
Answer :
Correct option – (c)
It is meant to conserve both, the biodiversity and the culture of that area – This statement is True.
Question no – (4)
The place meant for conservation of biodiversity in their natural habitat are
Answer :
Correct option – (c) iii and iv
The place meant for conservation of biodiversity in their natural habitat are Wildlife sanctuary and National park.
Question no – (5)
Which one of the following statements is true about endemic species?
Answer :
Correct option – (a)
They are found exclusively in a specific habitat – this is True.
Question no – (6)
Which of the following feature is correct for a wildlife sanctuary?
Answer :
Correct option – (a)
It is an artificially created protected area for animals – this one is correct feature.
Question no – (7)
Which statement is incorrect about endangered species?
Answer :
Correct option – (c)
The incorrect statement is – They pose a danger to other animals.
Question no – (8)
What do black buck, elephant, python and golden cat together represent in a forest?
Answer :
Correct option – (a)
Black buck, elephant, python and golden cat together represent Fauna in a forest.
Question no – (9)
The Red Data Book keeps a record of all the
Answer :
Correct option – (c) iii and iv
The Red Data Book keeps a record of all the endangered Plants and Animals.
Question no – (10)
Migratory birds fly to far away areas during a particular time of a year. Which of the following conditions present in their habitat during that time are responsible for this behaviour?
Answer :
Correct option – (b) i and ii
The conditions are –
• Unavailability of food.
• Extreme weather conditions.
Question no – (11)
In our country, large patches of forests are being cleared for cultivation of crops. The environmental impact of such a practice will lead to
Answer :
Correct option – (a)
The environmental impact of such a practice will lead to Soil erosion.
Very Short Answer Questions :
Question no – (12)
Answer :
It is very important to conserve forest . Without forest the ground water of an area will decrease changing that place into a dessert. The loss of forest will be dangerous to our balance in nature. Carbon dioxide released into the atmosphere will not be absorbed by plants this will result in increased green house effect.
Question no – (13)
Answer :
I have taken an oath to plant as much trees as possible be in the form of growing a garden or cultivating crops or by taking part in afforestation program.
Question no – (14)
Answer :
(i) There can be a wildlife sanctuary within a biosphere reserve
= This statement is True
(ii) Plants of a particular area are collectively termed as fauna
= This statement is False.
= Reason : Plants of a particular area are collectively termed as flora.
(iii) Deforestation leads to an increase in the water holding capacity of the soil.
= This Statement is False
= Reason – Deforestation leads to a decrease in water holding capacity of soil.
(iv) Bison is an endemic fauna of Pachmarhi Biosphere Reserve
= This statement is True.
Question no – (15)
Answer :
Yes, a forest can regenerate itself in a long period of time without the intervention of human and this process is usually known as reforestation.
Question no – (16)
Answer :
Satpura National Park of Madhya Pradesh is the first reserve forest of India.
Short Answer Questions :
Question no – (17)
Answer :
In a wildlife sanctuary illegal activities such as killing and capturing of wild animals are prohibited by law so the plants and animals that are adapted to live in this type of habitat remains protected from outside threat where they flourish and produce their own kind to maintain balance in nature.
Question no – (18)
Answer :
Endemic organism are very prone to became extinct as they are adapted to survive in only a limited area with a particular environment so a sudden change in their habitat will have drastic effect on them. They will start to die and possibly get extinct if their body don’t adapt with the new environment.
Question no – (19)
Answer :
The sudden introduction of species X in a forest will be dangerous for the endemic species of the forest as they will start to prey on them or could possibly eat the food that the endemic species had been eating in that place. Thus limiting the resources of a forest to that extent where they become extinct.
Question no – (20)
Answer :
The sudden introduction of species X in a forest will be dangerous for the endemic species of the forest as they will start to prey on them or could possibly eat the food that the endemic species had been eating in that place. Thus limiting the resources of a forest to that extent where they become extinct.
Question no – (21)
Answer :
Yes, soil erosion does effect the fertility of soil by removing the top layer of soil of an area which are rich in humus and other minerals.
Question no – (22)
Answer :
Rock painting have been found in Pachmarhi Biosphere Reserve which indicates that primitive people used to live in this biosphere reserve. Also flora like Sal and wild mango and fauna like bison, Indian giant squirrel and flying squirrel are endemic to this reserve.
Question no – (23)
Answer :
The aim of this Act is to conserve the forest and to meet the basic necessities of the people that live in or close to the forest.
Question no – (24)
Answer :
Biodiversity of a place means the variety of plants, animals and microorganisms that can be found living in that area.
Long Answer Questions :
Question no – (25)
Answer :
Deforestation is associated with global warming in the following ways. Trees often absorbs carbon dioxide from the atmosphere for producing their food . But if we keep on cutting trees the amount of carbon dioxide absorbed will be getting less and less. As carbon dioxide is a green house gas so it will trap the heat and thus increase the average temperature of the earth.
Question no – (26)
Answer :
The roots of trees helps the soil to absorb water much faster, so in the absence of trees water does not seeps into the ground but rather flows towards a nearby river which may cause flood onto nearby areas. Carbon dioxide are generally responsible for the increase in global temperature. So due to cutting of trees the carbon dioxide does not get absorbed but rather increases the temperature of earth. This increase in temperature results in droughts to some places.
Question no – (27)
Answer :
Papers are generally made from paper. Nowadays we use a large quantity of papers and often waste a lot of them. If we keep on using paper we will have to cut a lot of trees or deforest our land. This will eventually make us face the consequences of deforestation like severe droughts, floods, increased global temperature and more.
Other Chapter Solutions :
👉 Crop Production and Management
👉 Microorganisms : Friend and Foe
👉 Synthetic Fibres and Plastics
👉 Materials : Metals and Non-Metals
👉 Cell-Structure and Functions
👉 Reaching the Age of Adolescence
👉 Force
👉 Friction
👉 Sound
👉 Chemical Effects of Electric Current
👉 Light
