Question

12/23
what is the function of autotrophs in the carbon cycle?
to use oxygen to
produce glucose

to use carbon dioxide
to produce glucose

to feed on herbivores

to take in excess water

Explanation:

Autotrophs (like plants) perform photosynthesis. In this process, they use carbon dioxide ($\ce{CO_2}$) from the atmosphere, along with water and sunlight, to produce glucose ($\ce{C_6H_{12}O_6}$) and oxygen. The first option is incorrect because they produce oxygen, not use it to make glucose. The third option is for heterotrophs (like carnivores), and the fourth is unrelated to carbon cycle functions of autotrophs. So the correct option is the one about using carbon dioxide to produce glucose.

Answer:

B. to use carbon dioxide to produce glucose