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ICSE Class 7 Biology Question 3 of 8

Photosynthesis — Question 3

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Question 3

Explain any three factors that affect photosynthesis.

Answer

Following are the three factors that affect photosynthesis:

  1. Light — Light energy trapped by the chlorophyll is used to convert raw materials into sugar. The rate of photosynthesis also depends on the intensity of the light, higher the intensity of light higher is the rate of photosynthesis.
  2. Chlorophyll — It is found in structures called chloroplasts. It enables the plant to trap light energy.
  3. Temperature — The series of chemical reactions occurring during photosynthesis can take place only at a suitable temperature, the optimum being between 20°C to 40°C.