Answer:
Plants perform photosynthesis only in the presence of light. Photosynthesis relies on light energy to convert carbon dioxide and water into glucose and oxygen. This process occurs in the chloroplasts of plant cells, where chlorophyll captures light energy, primarily from the sun, to drive the chemical reactions of photosynthesis. In the absence of light, plants cannot perform photosynthesis but continue to respire, using stored energy for metabolic processes.
