NEET BIOLOGY

Detailed explanation-1: -Sol. (b) The number of stomata. Photosynthesis is affected by light, temperature, water, and CO2. Stomata affect the process of transpiration and do not affect photosynthesis.

Detailed explanation-2: -Additionally, the energy generated during oxygen respiration is required for photosynthesis. An increase in oxygen levels above the optimum for the plant, on the other hand, inhibits photosynthesis.

Detailed explanation-3: -Oxygen is mainly released as a by-product by photolysis of water and released in the atmosphere. Thus, it is not required for photosynthesis.

Detailed explanation-4: -Final answer: Factors which affect the rate of photosynthesis are carbon dioxide, water, sunlight and chlorophyll.

Detailed explanation-5: -External factors that influence photosynthetic rate: temperature, pH levels in the soil, the intensity of the light, weather conditions, and concentration of carbon dioxide.