Question

Which of the following statements about the lights reactions is CORRECT?

A. they only occur in the dark
B. they produce CO₂ and consume O₂
C.they convert CO₂ into organic compounds, such as glucose and starch
D. they capture light energy needed to power the calvin cycle

Answer 1

The light reactions of photosynthesis capture light energy which is converted into chemical energy needed to power the Calvin cycle.

Step-by-step explanation:

The correct statement about the light reactions of photosynthesis is D. they capture light energy needed to power the Calvin cycle.

During the light-dependent reactions, chlorophyll within the thylakoid membranes of chloroplasts absorbs light energy and converts it into chemical energy stored in ATP and NADPH. These molecules are then used during the light-independent reactions, known as the Calvin cycle or carbon fixation, to produce sugars like glucose from CO₂.