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Science · 2023 · 2 marks
CBSE 2023 · Region 1 · Set 3 · Q21
A plant hormone helps in bending of stem towards light. Name the hormone and explain how is the movement achieved.
A plant hormone helps in bending of stem towards light. Name the hormone and explain how is the movement achieved.
Marking-scheme solution
Auxin
When light is coming from one side of the plant, auxin diffuses towards the shady side of the shoot. This stimulates the cells of the shoot to grow longer and bend towards light.
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.