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Science · 2024 · 1 mark
CBSE 2024 · Region 1 · Set 1 · Q11
A stomata closes when: (i) it needs carbon dioxide for photosynthesis. (ii) it does not need carbon dioxide for photosynthesis. (iii) water flows out…
A stomata closes when :
(i)
it needs carbon dioxide for photosynthesis.
(ii)
it does not need carbon dioxide for photosynthesis.
(iii)
water flows out of the guard cells.
(iv)
water flows into the guard cells. The correct reason(s) in this process is/are :
Official answer
(C)
(ii) and (iii)
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CBSE Class 10 Science past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.