What is the primary role of chlorophyll in photosynthesis?

• A. It absorbs light energy to drive the synthesis of organic molecules.
• B. It releases oxygen as a byproduct of cellular respiration.
• C. It stores glucose produced during photosynthesis.
• D. It transports water from the roots to the leaves.

Answer: (A)

Verified step by step guidance

1. Understand the process of photosynthesis: Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy stored in glucose. It primarily occurs in the chloroplasts of plant cells.
2. Identify the role of chlorophyll: Chlorophyll is a pigment found in the chloroplasts that plays a crucial role in capturing light energy from the sun. This energy is then used to drive the reactions of photosynthesis.
3. Clarify the function of light absorption: Chlorophyll absorbs light most effectively in the blue and red wavelengths of the visible spectrum. This absorbed light energy excites electrons, initiating the light-dependent reactions of photosynthesis.
4. Eliminate incorrect options: Chlorophyll does not release oxygen as a byproduct of cellular respiration (this occurs during photosynthesis, but it is not chlorophyll's role). It also does not store glucose or transport water; these are functions of other processes and structures in the plant.
5. Conclude the correct answer: The primary role of chlorophyll in photosynthesis is to absorb light energy to drive the synthesis of organic molecules, such as glucose, during the light-dependent reactions.