AP BIOLOGY

Detailed explanation-1: -Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.

Detailed explanation-2: -The waste product of photosynthesis is oxygen gas, O2. This benefits plants, as they use carbon dioxide as a source of carbon and oxygen to create glucose.

Detailed explanation-3: -Some of the oxygen produced in the process of photosynthesis is used in respiration by the leaf cells but the major portion of it is not required and it diffuses out into the atmosphere through the stomata. Therefore, it may be called a waste product of photosynthesis.

Detailed explanation-4: -When plants respire, plants produce carbon dioxide and this excess carbon dioxide must be eliminated. Hence the waste products in plants are oxygen, carbon dioxide and water.