Question:

One of the chief reasons among the following for the depletion in the number of species making it endangered is _________

Updated On: Apr 18, 2024
  • Habitat destruction
  • Competition and predation
  • Greenhouse effect
  • Over-hunting and poaching
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The Correct Option is A

Solution and Explanation

Destruction o f natural habitats causes the most serious threat to the biodiversity, endangering many animals. Habitats are destroyed/fragmented by many human activities like, developmental work, deforestation, pollution, etc. Over hunting and poaching also have harmful effect.
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Concepts Used:

Biodiversity and Conservation

The term ‘biodiversity’ is derived from the two words- ‘bios' which means life and ‘diversity’ i.e, differentiation or variation. Edward Wilson, the sociobiologist was the first to popularise the term ‘biodiversity’ in the year 1992. The term implies the occurrence of various plants and animals along with their variants such as biotypes, ecotypes and genes on earth. In our biosphere, the immense diversity or heterogeneity remains not only at the species level but also, at every level of biological organization that ranges from macromolecules in the cells to biomes.

Biodiversity and Conservation is a topic covered under the fifteenth chapter and Unit 5 of NCERT class 12 biology.