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प्रश्न
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
पर्याय
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
उत्तर
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
Explanation:
The energy flow is unidirectional. The energy that autotrophs absorb from the Sun does not return, and the energy that goes to herbivores does not go back to the autotrophs. It is no longer accessible to the previous level as it progresses through the various trophic levels.
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संबंधित प्रश्न
Why are green plants called producers?
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
Give one example of a simple food chain.
Which of the following statement is incorrect?
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
Which common pesticide has accumulated in human body in considerable amounts?
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.
(a) Write a food chain comprising all the four organisms mentioned above.
(b) Name (i) one herbivore, and (ii) two carnivores, in this food chain.
(c) Name the link which is a predator as well as a prey.
(d) Name (i) second trophic level, and (ii) third trophic level.
(e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently?
(f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through the food chain.
Arrange the following in a correct sequence and form a food chain
Rabbit → Carrot → Eagle → Snake
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
