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Science · 2023 · 2 marks
CBSE 2023 · Region 4 · Set 3 · Q21
Name a plant hormone responsible for bending of a shoot of a plant when it is exposed to unidirectional light. How does it promote phototropism?
Marking-scheme solution
Auxin
Auxins slowly diffuse towards the shady side of the shoot which stimulate cells on the shady side to grow longer, causing the plant to bend towards light.
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CBSE Class 10 Science past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.