NCERT Solutions for Class 8 Science Chapter 7 Conservation of Plants and Animals

 

NCERT solutions for class 8 science chapter 7 conservation of plants and animals: Have you ever heard the name of a bird called Dodo?, the answer is NO because this bird has been extinct many years ago. Not only Dodo, but other species are also there who have gone forever. In the solutions for NCERT class 8 science chapter 7 conservation of plants and animals, you will get questions and answers related to the conservational idea of plants and animals. There are so many birds, mammals, reptiles, amphibians, fish, and even insects that migrate from one place to another due to several reasons. In this chapter, you will learn that migration is the phenomenon of movement of a species from its own habitat to some other habitat for a particular time period every year for some specific purposes like breeding. When you will go through this chapter, you will get to know the name of all those species as in NCERT solutions for class 8 science chapter 7 conservation of plants and animals, there are few questions related to this topic. If you need help in finding solutions of NCERT book to any other class, then don't worry NCERT solutions will help you out.

Here are the important topics and subtopics of CBSE NCERT solutions for class 8 science chapter 7 conservation of plants and animals mentioned below:

7.1  Deforestation and Its Causes

7.2  Consequences of Deforestation

7.3  Conservation of Forest and Wildlife

7.4  Biosphere Reserve

7.5  Flora and Fauna

7.6  Endemic Species

7.7  Wildlife Sanctuary

7.8  National Park

7.9  Red Data Book

7.10  Migration

7.11  Recycling of Paper

7.12  Reforestation

Conservation of Plants and Animals

If we talk about the important terms related to which you will get questions in this chapter is flora and fauna, red data book, deforestation, and reforestation. As plants and animals of a particular area are known as the flora and fauna of that area, and reforestation is the restocking of destroyed forests by planting new trees and these are important to learn in detail as you will get questions related to these topics in the solutions for NCERT class 8 science chapter 7 conservation of plants and animals.

CBSE NCERT solutions for class 8 science chapter 7 conservation of plants and animals:

Paheli's Question (Page number - 77) 

Q. What is the purpose of making national parks, wildlife sanctuaries and biosphere reserves?

Answer:

The main purpose of making national parks, wildlife sanctuaries and biosphere reserves is to protect the animals from an external threat like prevent from hunting and other danger.

And also to maintain their natural habitat as well as their own environment.

Boojho's Question (Page Number- 77)

Q. How does deforestation reduce rainfall on the one hand and lead to floods on the other?

Answer:

Deforestation means cutting down the trees. And we know that trees play an essential role in the water cycle as it contributes moisture to the air which brings rainfall. So if no. of trees decreases the process of transpiration and water cycle gets disturbed. Hence rainfall will be reduced.

Reduced rain will reduce the amount of water absorption in the soil. This soil will be dry and leads to lower water intake in the trees, and because of that, soil erosion will occur, and it leads to floods.

Activity 7.2 (Page Number - 78)

Q. Animal life is also affected by deforestation. How?

Answer:

Animal life is also affected by deforestation because wild animals lose their shelter and food amount is decreased. So, they start migrating for the search of the food, in this process they might get killed by other animals or hunters. In this way, their life will be affected by deforestation.

Paheli's Question (Page number - 83) 

Q.  Are only big animals facing extinction?

Answer:

No, It is not necessary that only big animal is going to be extinct. 

Ex- Dodo is not that big but is extinct now.

NCERT solutions for class 8 science chapter 7 conservation of plants and animals: Solved Exercise questions:

Q1. 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.

Answer:

(a) A place where animals are protected in their natural habitat is called Sanctuary.

(b) Species found only in a particular area is known as endemic species

(c) Migratory birds fly to far away places because of climate changes.

Q2 (a). Differentiate between the following.

Wildlife sanctuary and biosphere reserve

Answer:

Here is the difference between a wildlife sanctuary and a biosphere reserve:

Wildlife sanctuary Biosphere reserve

1. It is a place where animals are protected from any disturbance and also their habitat is conserved.

2. It provides protection as well as suitable living conditions to wild animals.

3. example- Bori and Pachmarhi (part of Pachmarhi biosphere)

1. It is a large area of protected land for conservation of animals, plants and their habitat also.

2. It helps to maintain the biodiversity and culture of that area.

3.ex. Pachmarhi biosphere

Q2 (b). Differentiate between the following.

Zoo and wildlife sanctuary

Answer:

Here is the difference between zoo and wildlife sanctuary:

                 Wildlife sanctuary                             Zoo

1. It is a place where animals are protected from any disturbance and also their habitat is conserved.

2. It provides protection as well as suitable living conditions to wild animals.

1. It is a place where animals are kept for public exhibitions

2. It is an artificial habitat, where things are provided by humans/owners

Q2 (c). Differentiate between the following.

 Endangered and extinct species

Answer:

Here is the difference between endangered and extinct species:

Endangered Species Extinct species

1. The species which are going to be extinct or on the verge of becoming extinct.

2. ex- a blue whale

1. Those species which are already gone or no longer exist on earth.

2. ex- dodo

Q2 (d). Differentiate between the following.

Flora and fauna

Answer:

Here is the difference between flora and fauna:

Flora Fauna

1. These are living plants from a particular area.

2. sal, teak, jamun, silver ferns are the example of flora.

1. animals living in a particular area

2. barking deer, wolf, cheetah, wild dog are the example of fauna.

NCERT solutions for class 8 science chapter 7 conservation of plants and animals:

Q3. Discuss the effects of deforestation on the following.

(a) Wild animal

Answer:

Due to deforestation, the forests are going to be exterminated and because of that animals are losing their homes as well as their natural habitat.

Therefore their populations are going down rapidly.

Q3. Discuss the effects of deforestation on the following.

(b) Environment

Answer:

Due to deforestation, unbalancing is happen between carbon dioxide and oxygen. Also, it affects the climate of the surrounding environment.

Global warming is increased because of the increase in the amount of carbon dioxide.

Q3. Discuss the effects of deforestation on the following.

(c) Villages (Rural areas)

Answer:

Because of deforestation, in rural areas, the level of groundwater goes down which means access to potable water become difficult.

Also, more chance of soil erosion is occurring because plants roots that hold the soil particle together is been removed also the fertility of the soil is decreased.

Q3. Discuss the effects of deforestation on the following.

(d) Cities (Urban areas)

Answer:

Effects of deforestation on cities: 

It can increase the chances of natural calamities like a flood or heavy rainfall.

Also, it can lead to global warming because of the increase in the level of carbon dioxide in the atmosphere because of vehicular and industrial pollution. Increase in temperature also disturbs the water cycle.

Q3. Discuss the effects of deforestation on the following.

(e) Earth

Answer:

Deforestation disturbs the whole ecological system. As a result of deforestation, increase in chances of the flood, soil erosion, drought, and desertification increases.

Also, increase global warming due to the increase in the level of carbon dioxide. As a result, the total water cycle gets disturbed and also the level of potable water goes down.

Q3. Discuss the effects of deforestation on the following.

(f) The next generation

Answer:

Effect of deforestation on the next generation-

Deforestation causes many problems such as drought, floods, soil erosion, greenhouse effects, and other global issues, etc.

And after all, the consequences of these will affect the future generation.

Solutions for NCERT class 8 science chapter 7 conservation of plants and animals:

Q4. What will happen if.

(a) we go on cutting tree

(a) we go on cutting trees

Answer:

If we go cutting the trees, the life of animals and their habitat will get completely vanished.

And because of it, the ecological balance is disturbed. Biodiversity of many areas will be destroyed completely.

Also global warming increase and due to it, the desertification will happen which lead to soil erosion and also more chance of drought.

Q4. What will happen if.

(b) the habitat of an animal is disturbed

Answer:

If the habitat of animals is disturbed, it means their home and foods all are going to have vanished for them.

So they start migrating to the land areas for the search of food and shelter, where people live, and this is dangerous for those people.

Also, animals can get killed by others. As a result whole ecological system is starting to unbalancing.

Q4.What will happen if.

(c) the top layer of soil is exposed.

Answer:

If the top layer of soil is exposed, then it will gradually be exposed to the lower layer of the soil which is mostly rocky and hard in nature.

And this is less fertile because it has less humus.

If the soil erosion is continuously occurring then the land becomes completely fertile.

Q5 (a). Answer in brief.

Why should we conserve biodiversity?

Answer:

We should conserve biodiversity because it contains a variety of life forms like plants, wild animals and micro-organism in an area.

For survival, All plants and animals depend on each other.

If you disturb any one of them, second will affect automatically.

Therefore, we need to protect them to maintain the balance in nature.

Q5(b). Answer in brief.

Protected forests are also not completely safe for wild animals. Why?

Answer:

Protected forests are also not entirely safe for wild animals because of the people who live near the jungle are mainly depends on the forests for their food and other requirement purposes.

So in this process, some wild animals are getting killed and sell them for their greediness of money.

Q5(c). Answer in brief.

Some tribals depend on the jungle. How?

Answer:

Some tribals depend on the jungle because they provide them with shelter, food and other requirements like herbs and so many things which are useful for them.

Q5(d). Answer in brief.

What are the causes and consequences of deforestation?

Answer:

 Due to deforestation, there is an increase in temperature and pollution on earth.

It increases the level of carbon dioxide in the atmosphere. Groundwater level also gets lowered. deforestation disturbs the balance in nature.

If we continue the cutting of trees, rainfall and the fertility of the soil will decrease. More chances of natural calamities like floods and droughts.

Q5(e). Answer in brief.

What is Red Data Book?

Answer:

A red data book is a source book. This book keeps the record of endangered animals and plants all over the world.

This book is maintained by IUCN (international union for conservation of nature and natural resources).

Q5(f). Answer in brief.

What do you understand by the term migration?

Answer:

Migration means the movement of a group of an organism from its natural habitat to other places in a particular time of every year.

They do migrate because of the climate change in their habitat.

Q6.  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.

Answer:

No, It is not at all justified to cut trees to meet the ever-increasing demand in factories and for shelter. Forests are the home for many organisms such as wild animals. Basically, forests are home for the wild animals and they provide us a good quality of air as they give out oxygen and absorbs the carbon dioxide from the surroundings.

They prevent the excess heating of the atmosphere; also they prevent soil erosion. Trees help to increase the fertility of the soil and also preserve biodiversity. To fulfill the need of the human population, we have been cutting so many trees, and as a result, we have to face many problems like global warming, soil erosion, and droughts, etc.

Hence we cannot afford to cut more trees, and we need to save them.

Q7. How can you contribute to the maintenance of green wealth of your locality? Make a list of actions to be taken by you.

Answer:

We can contribute to the maintenance of green wealth of our locality by following ways-

  • By taking cares of plants and trees of our surroundings. We can do more number of planting.
  • To encourage the people of my area to plant more trees by telling them about the importantness of trees.
  • We can aware the young children by telling them the consequences of deforestation and how they affect the environment.
  • And also keep watering the plants, so that they can grow healthy and easily.

Q8. Explain how deforestation leads to reduced rainfall.

Answer:

Deforestation means the removal of trees or plants from an area for different purposes.

We know that plants absorb carbon dioxide from the atmosphere. and if there is no plant, the level of carbon dioxide in the atmosphere will rise.

These lead to increasing the temperature of the earth, and it will disturb the water cycle. As a result of the disruption in the water cycle, also affect the rainfall pattern.

Q9. Find out about national parks in your state. Identify and show their location on the outline map of India.

Answer:

Name of the state- West Bengal

National park- Sundarban nation park

Here below the outline of Sundarban national park

 

CBSE NCERT solutions for class 8 science chapter 7 conservation of plants and animals:

Q10. Why should paper be saved? Prepare a list of ways by which you can save paper.

Answer:

The paper should be saved because to make one-tonne paper we need to cut approximately seventeen fully grown tree. Therefore, to save trees and prevent the impact of their loss on living organisms. we need to save the papers.

Paper can be saved by following ways-

  1. by collecting used paper and recycle it
  2. use both sides of the paper
  3.  Spread the awareness about paper
  4. Use paper efficiently

Q11. 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.

Answer:

  1. ENDANGERED & EXTINCT
  2. RED DATA BOOK
  3. ENDEMIC
  4. BIODIVERSITY
  5. DROUGHT

After going through this chapter line by line, it will become clear in your mind that why this chapter is important to study. So, try to attempt all the questions by yourself first. In case, if you have any query, refer to NCERT solutions for class 8 science chapter 7 conservation of plants and animals as it will help you to score more marks in your school exam.

NCERT Solutions For Class 8 Science- Chapter-wise 

Chapter 1

NCERT solutions for class 8 science chapter 1 Crop Production and Management

Chapter 2 

Solutions of NCERT  class 8 science chapter 2 Microorganisms Friend and Foe In Microorganisms

Chapter 3

CBSE NCERT solutions for class 8 science chapter 3 Synthetic Fibres and Plastics

Chapter 4

NCERT solutions for class 8 science chapter 4 Materials Metals and Non Metals

Chapter 5

Solutions of NCERT  class 8 science chapter 5 Coal and Petroleum

Chapter 6

CBSE NCERT solutions for class 8 science chapter 6 Combustion and Flame

Chapter 7

NCERT solutions for class 8 science chapter 7 Conservation of Plants and Animals

Chapter 8

Solutions of NCERT class 8 science chapter 8 Cell Structure and Functions

Chapter 9

CBSE NCERT solutions for class 8 science chapter 9 Reproduction in Animals

Chapter 10

NCERT solutions for class 8 science chapter 10 Reaching the Age of Adolescence

Chapter 11

Solutions of NCERT  class 8 science chapter 11 Force and Pressure

Chapter 12

CBSE NCERT solutions for class 8 science chapter 12 Friction

Chapter 13

NCERT solutions for class 8 science chapter 13 Sound

Chapter 14

Solutions of NCERT  class 8 science chapter 14 chemical effects of Electric Current

Chapter 15

CBSE NCERT solutions for class 8 science chapter 15 Some Natural Phenomena

Chapter 16

NCERT solutions for class 8 science chapter 16 Light

Chapter 17

Solutions of NCERT  class 8 science chapter 17 Stars and the Solar System

Chapter 18

CBSE NCERT solutions for class 8 science chapter 18 pollution of air and water

NCERT Solutions For Class 8: Subject-Wise

Benefits of NCERT solutions for class 8 science chapter 7 conservation of plants and animals:

  • You will get all the answers to this chapter and it will help you to score good marks in your school exam.
  • CBSE NCERT solutions for class 8 science chapter 7 conservation of plants and animals will also boost your knowledge.
  • NCERT is the base of your learning.
  • Solutions for NCERT class 11 biology chapter 7 conservation of plants and animals will also help you to understand all the concepts easily
 

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