Question

which of the following statements about the autotrophs is incorrect?
a) they synthesis 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

Answer 1

Answer:

The correct answer of this question is option A,they synthesis carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll.

Explanation:

Autotrophs are small producer organisms in our ecosystem.

Unlike the plants ,they use chemical energy rather than the solar energy for the production of their food substances.

That's why option A is the incorrect information about the autotrophs.

Answer 2

Answer:

An autotroph is an organism that serves as a primary producer and this occupies the first trophic level in food chains. They take carbon dioxide and water from the environment and convert them the energy-rich carbohydrates (starch) with the help of sunlight (usually called photoautotrophs) and release oxygen. This happens in the chloroplast of the cells which have chlorophyll pigment that absorbs the sun's energy. Thus, the correct answer is option C.

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