Biology
Grade-9
Easy
Question
Oxygen released during photosynthesis is evolved from _____________.
- Water
- Sunlight
- Carbon dioxide
- Starch
Hint:
During photosynthesis oxygen is liberated by the hydrolysis of water in the green plants.
The correct answer is: Water
Oxygen liberated during photosynthesis comes from the splitting or hydrolysis of water in the green plants. Water molecule splits to produce Oxygen and hydrogen ions. Oxygen is expelled out of plants and hydrogen is used to reduce carbon dioxide to produce carbohydrates.
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