alleryAn aquatic plant in bright light produces visible bubbles. This proves
AHydrogen release during photolysis alone
BCarbon dioxide release during respiration
CNitrogen release during fixation reactions
DOxygen release during photosynthesis
Answer & Solution
Correct answer: D. Oxygen release during photosynthesis
1. Photosynthesis splits water and releases O2.
2. Under water this O2 collects as visible bubbles.
3. The setup is the classic inverted funnel experiment.
4. So the bubbles prove oxygen release.
_Source: Selina Concise Biology Class 10, Ch on Photosynthesis (Mistral OCR'd PDF), section on aquatic plant experiment_
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