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Which of the following is true:-...

Which of the following is true:-

A

32% of amphibians species face threat of extinction

B

Lichens have higher biodiversity than algae `&` fungi together

C

Gangs basin have higher biodiversity than Amazon rain forest

D

A stable community should show huge variation in productivity from year to year.

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ALLEN-ORGANISM & ENVIRONMENT AND DEMOGRAPHY-EXERCISE-II
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  2. Which one of the following is an example of mutualism ?

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  3. Which of the following is true:-

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  4. Cryopreservation of gametes of threatened species in viable and fertil...

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  5. High value of BOD (Biochemical Oxygen Demand) indicates that

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  6. The UN Conference of Parties on climate change in the year 2011 was he...

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  7. Rachel Carson's famous book "Silent Spring" is related to

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  8. Most animals are tree dwellers in a

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  9. In which of the following both pairs have correct combination?

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  10. Vertical distribution of different species occupying different levels ...

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  11. The mass of living material at a trophic level at a particular time is...

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  12. In an ecosystem the rate of production of or- ganic matter during phot...

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  13. Secondary Succession takes place on/ in

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  14. The following graph depicts changes in two populations (A and B) of he...

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  15. Most animals that live in deep oceanic wa- ters are

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  16. An association of individuals of different species living in the same ...

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  17. Eutrophication of water bodies leading to killing to fishes is mainly...

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  18. Acid rain is caused by increase in the atmo- ,spheric concentration of

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  19. Increase in concentration of the toxicant at successive trophic levels...

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  20. Which of the following is not a cause for loss of biodiversity

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