Class 9
Chapter 7 Class 9 - Diversity In Living Organisms

Diversity means the uniqueness of individuals among the living organisms

Biodiversity means to the variety of life forms found in a particular region.

It means the variability among living organisms from all sources including terrestrial, aquatic and other ecosystem.


Importance of Biodiversity:


Ecological life support

Biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services. 

Ecological Stability

Every species has a specific role in an ecosystem. They capture and store energy and also produce and decompose organic matter . The ecosystem supports the services without which humans cannot survive. A diverse ecosystem is more productive and can withstand environmental stress.


Economic Importance

Biodiversity is a reservoir of resources for the manufacture of food, cosmetic products and pharmaceuticals.

  • Crops livestock, fishery, and forests are a rich sources of food.
  • Wild plants such as Cinchona and Foxglove plant are used for medicinal purposes.
  • Wood, fibres, perfumes, lubricants, rubber, resins, poison and cork are all derived from different plant species.

The national parks and sanctuaries are a source of tourism. They are a source of beauty and joy for many people.


Ethical Importance

All species have a right to exist. Humans should not cause their voluntary extinction. Biodiversity preserves different cultures and spiritual heritage. 

Therefore, it is very important to conserve biodiversity.


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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo