Question

What factors affect photosynthesis?

Answer 1

Photosynthesis:

• The process involving producing the carbohydrate molecules by utilizing the energy from the sun rays is known as photosynthesis.
• The substrate for this process is water and carbon dioxide molecules.

Factors Affecting Photosynthesis:

• Light Intensity: The rate of photosynthesis increases with elevation in the light intensity up to a certain point as the plants can absorb more light energy. But the very high light intensity can negatively impact photosynthesis, thus decreasing its rate.
• Temperature: Photosynthesis occurs at an optimum range of temperature. This range is about 20°C to 40°C. The elevation or reduction from this temperature range can decrease the rate of photosynthesis.
• Carbon dioxide: The elevation in the carbon dioxide concentration increases the photosynthesis rate. But its very concentration can cause toxic effects on the plants, thus decreasing the photosynthesis rate.
• Water: The water deficiency in the plant can reduce the photosynthesis rate as stomata remain closed to prevent its loss through transpiration. It prevents the entry of carbon dioxide into the plants.