Question:
Which experiment proves that oxygen is evolved by plants during photosynthesis?
Which experiment proves that oxygen is evolved by plants during photosynthesis?
Updated On: Apr 17, 2025
- Hydrilla experiment
- Mohl's half leaf experiment
- Black paper experiment
- None of the above
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The Correct Option is A
Solution and Explanation
To solve this question, we need to identify which experiment proves that oxygen is evolved by plants during photosynthesis.
1. Hydrilla Experiment:
The Hydrilla experiment, conducted by Joseph Priestley and others, involves placing a plant (Hydrilla) in water and observing the production of oxygen when exposed to light. In this experiment, oxygen bubbles were observed to evolve from the plant, proving that oxygen is a byproduct of photosynthesis in plants.
2. Evaluating the Options:
- (A) Hydrilla experiment – Correct; it provides evidence for oxygen evolution during photosynthesis. ✔
- (B) Mohl's half leaf experiment – Incorrect; Mohl's experiment demonstrated the process of transpiration, not oxygen evolution.
- (C) Black paper experiment – Incorrect; this experiment is used to demonstrate the effect of light on photosynthesis, but does not directly prove oxygen evolution.
- (D) None of the above – Incorrect; the Hydrilla experiment clearly proves oxygen evolution during photosynthesis.
Final Answer:
The correct answer is (A) Hydrilla experiment.
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