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The annual net primary productivity of t...

The annual net primary productivity of the whole biosphere is approximately

A

150 bilion tons

B

160 bilion tons

C

170 bilion tons

D

180 bilion tons

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The correct Answer is:
C
The annual net primary productivity of the whole biosphere is approximately 170 billion tons. Out of this, oceans contribute 55 billion tons.
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NCERT FINGERTIPS-ECOSYSTEM-Ecosystem
  1. The rate of formation of new organic matter by rabbit in a grassland, ...

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  2. Primary productivity depends upon

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  3. The annual net primary productivity of the whole biosphere is approxim...

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  4. Which one of the following exhibits least productivity?

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  5. Which one of the following is the most productive ecosystem?

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  6. Arrange the following ecosystems in increasing order of their mean NP...

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  7. Fragmentation, leaching and catabolism are some of the important steps...

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  8. Read the given statements and select the correct option. Statement 1 :...

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  9. which of the following is not characteristic of humus?

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  10. Match column I with column II and select the correct option from the g...

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  11. During the process of decompositon

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  12. Rate of decompositon depends upon

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  13. Decomposers are also called as

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  14. The ultimate energy source of all ecosystem is

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  15. Percentage of photosynthetically active radiation (PAR) in the inciden...

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  16. Percentage of photosyntetically active radiation (PAR) that is capture...

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  17. Read the given statements and select the correct option. Statement 1...

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  18. Given figure represents two food chains (X and Y) linked together to f...

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  19. Select the option that correctly identifies A,B and C in the table.

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  20. Select the incorrect food chain

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