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It is estimated that about 85% of the Ea...

It is estimated that about `85%` of the Earth's photosynthetic activity is carried out by:

A

trees

B

savannahs

C

phytoplanktons

D

herbaceous plants

Text Solution

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The correct Answer is:
C
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PRADEEP-ECOSYSTEM-Multiple choice question
  1. Identify which one of the following is an example of incomplete ecosys...

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  2. In a grassland ecosystem, if the number of primary producers (plants) ...

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  3. It is estimated that about 85% of the Earth's photosynthetic activity ...

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  4. A progressive series of changes in plant and animal life of an area fr...

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  5. Which of the following is an example of man-made ecosystem?

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  6. Identify the correct type of food chain. Dead animal rarr Blowfly m...

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  7. Trophic levels in ecosystem is formed by:

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  8. Select the formula for ecological efficiency:

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  9. The final stable community in ecological succession is:

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  10. In an aquatic ecosystem, the trophic level equivalent to cows in grass...

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  11. Desert, grassland, forests and tundra are the example of:

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  12. Which of the following is a free-living nitrogen fixing bacterium pres...

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  13. Which of the following fixes atmospheric N(2) ?

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  14. Pyramid of energy in a river ecosystem is:

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  15. Which one of the following types of organisms occupy more than one tro...

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  16. Chipko movement was launched for the protection of

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  17. The correct sequence of plants in a hydrosere is

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  18. Which one of the following is a symbiotic nitrogen fixer?

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  19. During the process of ecological succession the changes that take plac...

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  20. Climax community is in a state of

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