Conservation of Plants and Animals Class 8 Notes

According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 5.


  • Extinction is when a species is completely wiped out from the Earth.
  • Once the last living individual of a species dies, the species is said to be extinct.

To know more about Extinction, visit here.


  • Deforestation is the destruction of forests by cutting down trees.
  • Deforestation leads to habitat loss for many animals.

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To know more about Deforestation, visit here.

Causes of Deforestation

Deforestation can occur due to one of the following reasons:

  • Procuring land for cultivation.
  • Building houses and factories.
  • Making furniture or using wood as fuel.
  • Natural causes such as forest fires and severe drought can also cause deforestation.

Consequences of Deforestation

  • Deforestation increases the temperature and pollution level on the earth.
  • It increases the level of carbon dioxide in the atmosphere.
  • It also reduces the level of groundwater.


  • Drought is the lack of water in an area. Droughts can happen due to a lack of rainfall.

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  • The formation of a desert by erosion of vegetation due to harsh weather is called desertification.
  • Human activities like deforestation and improper irrigation are also responsible for desertification of terrains.

Global Warming

  • Global warming is the change of climate on a global level.
  • Usually, average temperature increases, leading to the melting of ice caps in the poles.
  • Excessive pollution and deforestation cause global warming.

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  • A species is a group of individuals that can breed and successfully produce fertile offspring.

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Make the World a Greener Place

Recycling of Paper

  • The paper industry is a leading cause of deforestation since they need wood pulp.
  • Recycling paper can help in reducing the consumption of wood pulp by the paper industry.

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  • Reforestation is restocking the destroyed forests by planting new trees.

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Wildlife Conservation

Conservation of forest and wildlife

  • Due to the threat from mankind’s indulgence, it is important for us to conserve the forest and its wildlife.
  • Wildlife is important for us to maintain balance in nature.

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Wildlife sanctuary

  • A wildlife sanctuary is a naturally occurring sanctuary, such as an island, that provides protection for species from hunting, predation, competition or poaching.

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National Park

Flora and fauna

  • The plants and animals found in a particular area are termed flora and fauna of that area, respectively.

National Park

  • A national park is a park that is used for biodiversity conservation.
  • They are developed and maintained by the Union Government.

To know more about National Parks and  Sanctuaries, visit here.

Biosphere Reserves

Biosphere and Biodiversity

  • The biosphere is the part of the earth in which living organisms exist or which supports life.
  • Biological diversity or biodiversity refers to the variety of organisms existing on the earth, their interrelationships and their relationship with the environment.


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Endemic species

  • Endemic species are those species of plants and animals which are found exclusively in a particular area.

For more information on Endemic Species, watch the below video

To know more about Endemic species, visit here.

Biosphere Reserve

  • Biosphere reserves are areas that are protected from human intervention.
  • These areas help in the conservation of endangered species.

To know more about the Biosphere Reserve, visit here.

Project Tiger

  • Project Tiger was launched by the government to protect and conserve the dwindling tiger population in the country.
  • Several Natural parks have been associated with the project tiger initiative.

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Endangered Animals

  • Animals whose numbers are diminishing to a level that they might face extinction are known as endangered animals.


  • An ecosystem is sum total of all the plants, animals and microorganisms in an area along with non-living components such as climate, soil, river deltas, etc.

Red Data Book

Red Data Book is the source book which keeps a record of all the endangered animals and plants.


  • Migration is the periodic movement of animals from one place to another.
  • It is usually done for breeding and to escape harsh climates.
  • Migration is common in birds and fish.

To know more about Migration, visit here.

Also Access 
NCERT Solutions for class 8 Science Chapter 7
NCERT Exemplar for class 8 Science Chapter 7

Learn more about the conservation of plants and animals and other related topics, including NCERT class 8 science notes, at BYJU’S.

Also Read:-

Biodiversity Conservation Meaning of Flora and Fauna

Frequently Asked Questions on CBSE Class 8 Science Notes Chapter 7: Conservation of Plants and Animals


What are the effects of deforestation?

The effects of deforestation are soil erosion/pollution, lack of natural resources, increase in greenhouse gases, flooding, etc.


What are the natural resources available on Earth?

Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water. Animals, birds, fish and plants are natural resources as well.


What are endemic species?

Endemic species are those species of plants and animals which are found exclusively in a particular area.


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