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[A] : There is a grudual increase in the...

[A] : There is a grudual increase in the energy content at successive trophic level from producer to consumers .
[R]:When one organism benefits the other in a chain , it is called commensalism .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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[A] : There is a gradual increase in the energy content at successive trophic level from producer to consumers . [R] : Pyramid of energy does not show energy accumulation pattern at different trophic levels .

[A] : Each food-level in an ecosystem is called trophic level . [R] : When an organism benefitted with affecting the other is called commensalism .

Energy transfer from one trophic level to another is

[A] : When the organisms live together in such a manner that one organism benefitted , while other has no effects , it is called commensalism . [R] : In commensalism one partner derives benefit from the other partner without in any way benefitting or harming it .

When the number of organisms at successive levels are ploted, they give the shape of pyramid. This is called the pyramid of

[A] : In a food chain , member of successive higher levels are fewer in number . [R] : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level .

[A] : Energy pyramid is sloping . [R] : The energy of one trophic level is lower than another level as we go up .

If one species benefits from the association while the other is neither harmed nor benefited it is called

According to Lindeman's law, the amount of transferred energy from one trophic level to the next is

[A] : Energy can be transformed from one form to another by living organisms. [R] : All organisms can not manufacture energy but they transform it

TRUEMAN BIOLOGY-Ecology -ASSERTION AND REASON
  1. [A] : A food chain is a group of organism in which there is a transfer...

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  2. [A] : Food chains are not paths of energy flow through an ecosystem. ...

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  3. [A] : There is a grudual increase in the energy content at successive ...

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  4. [A] : There is a gradual increase in the energy content at successive ...

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  5. [A] : Carbon monoxide is poisonous . [R] : It destroys RBC .

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  6. [A] : An estimation of B.O.D gives an indication of the amount of poll...

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  7. [A] : PAN is a secondary pollutant . [R] : The secondary pollutants ...

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  8. [A] : Soil particles , particularly clay and organic matter in soil , ...

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  9. [A] : Algal blooms deplete dissolved O(2) levels in polluted water bod...

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  10. [A] : Orchids are most threatened plants in tropics . [R] : Tropical...

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  11. [A] : Vegetation in the catchment areas prevents flash floods in the d...

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  12. [A] : Sedimentation which has been going on since the earth was forme...

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  13. [A] : When the organisms live together in such a manner that one organ...

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  14. [A] : Aerenchyma is a specialized tissue in some water plants characte...

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  15. [A] : The pyramid of biomass indicates the decrease or the gradual red...

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  16. [A] : Climate is affected by vegetation . [R] : The indirect factors...

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  17. [A] : Man is the consumer of the ecosystem . [R] : An antiforest con...

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  18. [A] : The importance of ecosystem lies in flow of energy and cycling o...

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  19. [A] : Biomonitoring is reliable for determining the pollutants in air ...

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  20. [A] : The food webs are very important in maintaining the stability of...

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