DENDROLOGY

Detailed explanation-1: -Glucose is the main product, while oxygen is the by-product of photosynthesis.

Detailed explanation-2: -The products of photosynthesis are organic food glucose ( or carbohydrate) and oxygen. The green plants store this food in the complex form called starch and release oxygen into the atmosphere.

Detailed explanation-3: -Answer and Explanation: The correct answer is (b) Oxygen. Oxygen is produced during photosynthesis, and consumed during cellular respiration.

Detailed explanation-4: -Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product.

Detailed explanation-5: -Glucose, C6H12O6, is produced during the dark reactions of photosynthesis, also known as the Calvin cycle. Photosynthesis starts with the light reactions. These reactions harvest the energy stored in sunlight and create chemical energy that can be used to power the dark reactions.