Question

The phosphorus cycle differs from the carbon cycle in that

• A. The phosphorus does not enter living organisms, whereas carbon does.
• B. The phosphorus cycle does not include a gaseous phase, whereas the carbon cycle does.
• C. The phosphorus cycle includes a solid phase, whereas the carbon cycle does not.
• D. The primary reservoir of the phosphorus cycle is the atmosphere, whereas the primary reservoir for the carbon cycle is in rock.

Answer 1

The correct option is B The phosphorus cycle does not include a gaseous phase, whereas the carbon cycle does.

Phosphorus is part of nucleic acids, ATP and Plasma memebrane, so it does enter living organisms.

The reservoir of carbon is atmosphere and that of phosphorus is rocks.