Class 8 Science - Chapter Conservation of Plants and Animals NCERT Solutions | What will happen if: (a) we go on cutti
What will happen if:
(a) we go on cutting trees.
(b) the habitat of an animal is disturbed.
(c) the top layer of soil is exposed.
(a) If we go on cutting trees: If we go no cutting trees then the habitat of the wild animals will be destroyed completely. The level of the carbon dioxide increases which may leads to the global warming. So, biodiversity is extremely affected by the deforestation which may lead to the danger of the survival of the many organisms.
(b) If the habitat of an animal is disturbed: A habitat is a place where an organism lives. It provides shelter, food and many other important things which are necessary for the survival. If the habitat of an animal is disturbed then they all have to move from that place to another for food and shelter. During this process, animal may get killed by the others.
(c) If the top layer of the soil is exposed: The upper/ top layer of the soil is fertile and the inner layer of the soil is rocky and hard. If the top layer of the soil is exposed, then the lower layer of the soil is exposed which is infertile.
The upper layer of the soil has humus whereas the lower layer does not have humus. If the continued exposure of the top layer of the soil occurs, it may lead to the soil erosion. It will make the land fertile.
More Questions From Class 8 Science - Chapter Conservation of Plants and Animals
- Q:-
Discuss the effects of deforestation on the following:
(a) Wild animals
(b) Environment
(c) Villages (Rural areas)
(d) Cities (Urban areas)
(e) Earth
(f) The next generation - Q:-
Answer in brief:
(a) Why should we conserve biodiversity?
(b) Protected forests are also not completely safe for wild animals. Why?
(c) Some tribals depend on the jungle. How?
(d) What are the causes and consequences of deforestation?
(e) What is Red Data Book?
(f) What do you understand by the term migration? - Q:-
Find out the information about the national parks in your state. Identify and show their location on the outline map of India.
- Q:-
Complete the word puzzle:
Down
1. Species on the verge of extinction.
2. A book carrying information about endangered species.
5. Consequence of deforestation.
Across
1. Species which have vanished.
3. Species found only in a particular habitat.
4. Variety of plants, animals and microorganisms found in an area.
- Q:-
Differentiate between the following:
(a) Wildlife sanctuary and biosphere reserve
(b) Zoo and wildlife sanctuary
(c) Endangered and extinct species
(d) Flora and fauna - Q:-
In order to meet the ever-increasing demand in factories and for shelter, trees are being continually cut. Is it justified to cut trees for such projects? Discuss and prepare a brief report.
- Q:-
Why should paper be saved? Prepare a list of ways by which you can save paper.
- Q:-
Explain how deforestation leads to reduced rainfall.
- Q:-
How can you contribute to the maintenance of green wealth of your locality? Make a list of actions to be taken by you.
- Q:-
Fill in the blanks:
(a) A place where animals are protected in their natural habitat is called .
(b) Species found only in a particular area is known as .
(c) Migratory birds fly to far away places because of changes.
Popular Questions of Class 8 Science
- Q:-
Which of the following can be beaten into thin sheets?
(a) Zinc (b) Phosphorus (c) Sulphur (d) Oxygen - Q:-
Fill in the blanks
(a) Most liquids that conduct electricity are solutions of , ______________ and ______________.
(b) The passage of an electric current through a solution causes ______________ effects.
(c) If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the terminal of the battery.
(d) The process of depositing a layer ofany desired metal on another material by means of electricity is called . - Q:-
Give two examples each of situations in which you push or pull to change the state of motion of objects.
- Q:-
Fill in the blanks:
(a) Friction opposes the _____________ between the surfaces in contact with each other.
(b) Friction depends on the _____________ of surfaces. (c) Friction produces __________.
(d) Sprinkling of powder on the carrom board ________ friction.
(e) Sliding friction is ___________ than the static friction. - Q:-
List conditions under which combustion can take place.
- Q:-
Indicate whether the following statements are True (T) or False (F).
(a) Unicellular organisms have one-celled body. (T/F)
(b) Muscle cells are branched. (T/F)
(c) The basic living unit of an organism is an organ. (T/F)
(d) Amoeba has irregular shape. (T/F) - Q:-
Which of the following cannot be charged easily by friction?
(a) A plastic scale
(b) A copper rod
(c) An inflated balloon
(d) A woollen cloth. - Q:-
Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room. Explain.
- Q:-
What are the different ways in which water gets contaminated ?
- Q:-
Explain the importance of reproduction in organisms.
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An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?
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