Question

A diagram of the carbon-oxygen cycle is shown below.



Which of these best describes the role of plants in the carbon-oxygen cycle?
A.
to absorb oxygen from the soil and use it to make carbon dioxide for sugar production
B.
to absorb carbon dioxide from the atmosphere and use it to make sugar
C.
to absorb oxygen from the atmosphere and release carbon dioxide into the atmosphere
D.
to absorb carbon dioxide from the atmosphere and release it back into the atmosphere

Answer 1

B. Plants take in carbon dioxide from the atmosphere and use it (with water and sunlight) in photosynthesis to make sugars, releasing oxygen as a byproduct.