Question 16
Photosynthesis and Plant NutritionThe oxygen released during photosynthesis is obtained
- A.from the catalytic splitting of carbon-dioxide in plant tissues
- B.from the breakdown of glucose molecules in cells.
- C.during the photolysis of water using energy trapped in chlorophyll
- D.by the excretion of excess oxygen in plant tissues.
Show the answer and explanation
Answer: C (during the photolysis of water using energy trapped in chlorophyll)
Explanation
In the light stage, light energy trapped by chlorophyll splits water (photolysis) into hydrogen and oxygen, and the oxygen is given off.