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CBSE Class 8 Biology Notes for Chapter 3 Conservation of Plants and Animals

CHAPTER 3 CONSERVATION OF PLANTS AND ANIMALS
 
DEFORESTATION
Deforestation is the clearing of forests to use the land for other purposes.
 
EFFECTS OF DEFORESTATION

  • Increase in temperature
  • Degradation of air quality
  • Lowering of ground water level
  • Decrease in fertility of soil
  • Increase in soil erosion
  • Desertification
  • Increase in chances of natural calamities

 
CONSERVATION OF FOREST AND WILDLIFE
Sanctuary: These are areas where the biodiversity of the area is protected from any outer disturbance
National Park: These are areas reserved for wild life they can freely the habitats and natural resources.
Biosphere reserve: These are large areas of protected land for not just conserving wildlife and plants but also the traditional life of the tribal people living in the area.
 
FLORA AND FAUNA
The plants found in a particular area are called flora of that area.
The animals found in a particular area are called fauna of that area.
 
ENDEMIC SPECIES
The species of plants and animals which are found exclusively in a particular area are called endemic species.
ENDANGERED SPECIES
The species whose numbers are becoming diminished to a level at which they might face extinction are called endangered species.
 
RED DATA BOOK
Red Data Book contains the list of all the endangered species across the globe.
 
MIGRATION
Migration is when animals, generally birds, move to far away areas during a particular time because of climatic changes.
 
RECYCLING OF PAPER
To reduce deforestation, paper must be recycled and wasted less.
 
REFORESTATION
To increase the forest cover, reforestation has to be done. Reforestation is the planting of new tres in the deforested areas.

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