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Flow of energy in an ecosystem is always...

Flow of energy in an ecosystem is always

A

unidirectional

B

bidirectional

C

multi directional

D

no specific direction

Text Solution

Verified by Experts

The correct Answer is:
A
Flow of energy in a food chain is unidirectional, once it reaches the next tropic level it does not come back again. For example, energy which passes to the herbivores does not come back again to autotrophs.
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OSWAL PUBLICATION-OUR ENVIRONMENT-NCERT EXEMPLAR (MULTIPLE CHOICE QUESTIONS)
  1. In a food chain, the third trophic level is always occupied by

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  2. An ecosystem includes :

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  3. In the given food chain, suppose the amount of energy at fourth trophi...

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  4. Accumulation of non-biodegradable pesticides in the food chain in incr...

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  5. Depletion of ozone is mainly due to

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  6. Organisms which synthesise carbohydrates from inorganic compounds by u...

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  7. In an ecosystem, the 10% of energy available for transfer from one tro...

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  8. Organisms of a higher trophic level which feed on several types of org...

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  9. Flow of energy in an ecosystem is always

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  10. Excessive exposure of human to UV-rays results in (i) damage to imm...

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  11. In the following groups of materials, which group(s) contains only non...

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  12. Which of the following limits the number of trophic levels in a food c...

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  13. Which of the following statement is incorrect?

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  14. Which group of organisms are not constituents of a food chain ? (i) ...

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  15. The percentage of solar radiation absorbed by all the green plants for...

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  16. In the given figure, the various trophic levels are shown in a pyramid...

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  17. What will happen if deer is missing in the food chain given below ? ...

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  18. The decomposers in an ecosystem :

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  19. If a grasshopper is eaten by a frog, then the energy transfer will be ...

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  20. Disposable plastic plates should not be used because :

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