Question

What process do plants use to convert light energy into chemical energy?

• A. Respiration
• B. Transpiration
• C. Photosynthesis
• D. Fermentation

Hint:

{Photosynthesis = Sunlight + CO$_2$ + Water → Glucose + Oxygen}.

Answer 1

The Correct Option is C

Concept: Photosynthesis is the process by which green plants convert light energy from the sun into chemical energy stored in glucose. This process takes place in the chloroplasts of plant cells using the pigment chlorophyll. The simplified photosynthesis equation is: \[ 6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6 + 6O_2 \]
Step 1: Understand the energy conversion.
During photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose and oxygen.
Step 2: Eliminate other options.

• Respiration releases energy from food.
• Transpiration is the loss of water vapor from plant leaves.
• Fermentation occurs in microorganisms under anaerobic conditions.

Thus, the process converting light energy into chemical energy is photosynthesis.