Question:
A photosynthetic algal filament is illuminated with white light that has passed through a prism such that the left and the right ends of the filament receive violet and red lights, respectively. The amount of oxygen released by this filament will be
A photosynthetic algal filament is illuminated with white light that has passed through a prism such that the left and the right ends of the filament receive violet and red lights, respectively. The amount of oxygen released by this filament will be
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Light intensity and wavelength affect the rate of photosynthesis. Violet light produces the highest rate, while red light is less effective.
Updated On: Dec 11, 2025
- high at the left end and progressively reducing towards the right
- high at the right end and progressively reducing towards the left
- high at both ends and progressively reducing towards the middle
- high in the middle and progressively reducing towards both ends
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The Correct Option is A
Solution and Explanation
Step 1: Understanding light absorption.
Photosynthetic organisms absorb light for photosynthesis, with violet light (high energy) being more effective in driving photosynthesis than red light (low energy).
Step 2: Oxygen production.
At the left end (violet light), photosynthesis will occur at a higher rate, releasing more oxygen. As we move to the right (red light), photosynthesis becomes less efficient, and oxygen production will decrease.
Step 3: Conclusion.
Therefore, the oxygen release will be highest at the left end (violet light) and decrease progressively towards the right (red light), so the correct answer is (A).
Photosynthetic organisms absorb light for photosynthesis, with violet light (high energy) being more effective in driving photosynthesis than red light (low energy).
Step 2: Oxygen production.
At the left end (violet light), photosynthesis will occur at a higher rate, releasing more oxygen. As we move to the right (red light), photosynthesis becomes less efficient, and oxygen production will decrease.
Step 3: Conclusion.
Therefore, the oxygen release will be highest at the left end (violet light) and decrease progressively towards the right (red light), so the correct answer is (A).
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