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The light-dependent reaction of photosynthesis takes place in which part of the chloroplast?
AThylakoid membranes
BStroma
CInter-membrane space
DOuter envelope
Answer & Solution
Correct answer: A. Thylakoid membranes
1. The light reaction was discovered by Robin Hill and needs light energy.
2. It occurs in the thylakoid membranes (grana) of the chloroplast.
3. Here light energy is converted to ATP and NADPH2.
4. The dark reaction occurs in the stroma, so the stroma is the trap option.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 12 Plant Anatomy and Plant Physiology "Light dependent Reaction", p.188_
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