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Which of the following statements about the autotrophs is incorrect?
(a) They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll
(b) They store carbohydrates in the form of starch
(c) They convert carbon dioxide and water into carbohydrates in the absence of sunlight
(d) They constitute the first trophic level in food chains

Answers (1)


Autotrophs can convert CO2 and H2O into carbohydrates only in the presence of sunlight. Autotrophs have chlorophyll which takes sunlight and breaks water into hydrogen and oxygen and converts CO2  into carbohydrates but happens only in the presence of sunlight.

So statement (c) is incorrect and thus it is the right answer.

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