Which statement is true concerning the light-dependent and light-independent reactions of photosynthesis?

Responses

Water is required for the light-dependent reactions, and carbon dioxide is required for the light-independent reactions.
Water is required for the light-dependent reactions, and carbon dioxide is required for the light-independent reactions.

Glucose is required for the light-dependent reactions, and oxygen is required for the light-independent reactions.
Glucose is required for the light-dependent reactions, and oxygen is required for the light-independent reactions.

Oxygen is required for the light-dependent reactions, and glucose is required for the light-independent reactions.
Oxygen is required for the light-dependent reactions, and glucose is required for the light-independent reactions.

Carbon dioxide is required for the light-dependent reactions, and water is required for the light-independent reactions

1 answer

The correct statement is:

Water is required for the light-dependent reactions, and carbon dioxide is required for the light-independent reactions.

In photosynthesis, the light-dependent reactions occur in the thylakoid membranes of the chloroplasts and require water as a source of electrons and protons. These reactions produce oxygen as a byproduct. The light-independent reactions (Calvin cycle), which take place in the stroma of the chloroplasts, utilize carbon dioxide to synthesize glucose.