JAMB Biology 1990 Question 18

Question 18

Photosynthesis and Plant Nutrition

The first step in the process of photosynthesis is the

  1. A.activation of the chlorophyll
  2. B.photolysis of water
  3. C.reduction of carbondioxide
  4. D.formation of sugar
Show the answer and explanation

Answer: A (activation of the chlorophyll)

Explanation

Photosynthesis starts when chlorophyll absorbs light energy and becomes activated; this energy then splits water.