Question

3. What are the three steps that take place during photosynthesis?
4. In each of the following situation what happens to the rate of photosynthesis?
A) Cloudy days
B) No rainfall
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Answer 1

Answer:

The three events that occur during the process of photosynthesis are: (i) Absorption of light energy by chlorophyll. (ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (iii) Reduction of carbon dioxide to carbohydrates

Answer 2

Answer:

3. (1) Absorption of light

   (2) Electron transport leading to the reduction of NADP+ to NADPH

  (3) Generation of ATP

4. Rate of photosynthesis in cloudy days:

The amount of sunlight will be low or less, so photosynthesis decreases because sunlight is an important factor in photosynthesis.

5. In no rainfall

photosynthesis rate decreases because there will be less water due to blocked stomata