Question

Name the various factors which affect the rate of photosynthesis in plants.

Answer 1

1. Appropriate sunlight: The rate of photosynthesis depends heavily on light. The rate increases with an increase in light intensity up to a certain limit.
2. Water availability: Water is an essential raw material for the process. A decrease in water availability severely reduces the rate of photosynthesis.
3. Carbon dioxide: The rate of photosynthesis increases with an increase in the concentration of carbon dioxide gas in the air.
4. Temperature: The rate of photosynthesis increases with rising temperature up to an optimum (usually around 35°C). If the temperature becomes excessively high, the rate of photosynthesis decreases and eventually stops entirely.