Explain why the rate of photosynthesis in plants is low both at lower and higher temperatures

  1. Explain why the rate of photosynthesis in plants is low both at lower and higher temperatures.
  2. Is green light most or least useful in photosynthesis and why?

Answer:

  1. Photosynthesis is an enzymatic process. The enzymes function within an optimum range of temperature which is neither very low nor very high. At low temperature the activity of enzymes is lowered due to which the rate of photosynthesis is also low. Again when the temperature is very high, the activity of enzymes decreases which leads to low rate of photosynthesis.
  2. Green light is least useful in photosynthesis, because chlorophyll does not absorb green light.