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What criteria should one use in categori...

What criteria should one use in categorising a species as threatened ?

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The criteria that should be used in categorising a specials as threatened are
(i) Number of the members of the species are declining at an alarming rate.
(ii) Their habitat is being modified or destroyed.
(iii) Predator or poacher activities are increasing.
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NCERT EXEMPLAR-BIODIVERSITY AND CONSERVATION-Biodiversity And Conservation
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  2. Why are the conventional methods not suitable for the assessment of bi...

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  3. What criteria should one use in categorising a species as threatened ?

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  4. What could be the possible explanation for greater vulnerability of am...

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  5. How do scientists extrapolate the total number of species on earth ?

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  6. Humans benefit from diversity of life. Give two examples.

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  7. List any two major causes other than anthropogenic causes of the loss ...

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  8. What is an endangered species ? Give an example of an endangered plant...

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  9. What are sacred groves and their role in biodiversity conservation ?

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  10. Suggest a place whre one can go to study coral reefs, mangrove vegetat...

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  11. Is it true that there is more solar energy available in the tropics ? ...

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  12. What is co-extinction ? Explain with a suitable example ?

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  13. Elaborate how invasion by an alien species reduces the species diversi...

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  14. How can you, as an individual, prevent the loss of biodiversity ?

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  15. Can you think of a scientific explanation, besides analogy used by Pau...

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  16. Though the confict between humans and wildlife started with the evolut...

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  17. What is an ecosystem service ? List any four important ecosystem servi...

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  18. Describe the consumptive use value of biodiversity as food, drugs and ...

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  19. Species diversity decreases as we move away from the equator towards t...

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  20. Explain briefly the 'rivet popper hypothesis' of Paul Ehrlich.

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