A plant receives light from one side, but its shoot tip is covered. Why may bending of the stem decrease?
Answer and explanation
Correct answer: The tip is involved in light perception and auxin distribution
In a young shoot, the tip detects directional light and coordinates the distribution of auxin. Auxin becomes more concentrated on the shaded side, where it promotes cell elongation, causing the shoot to bend towards the light. Covering the tip can reduce light perception and disrupt this unequal distribution, so bending may decrease. Thus option A is correct.
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What is the correct answer to this question?
The tip is involved in light perception and auxin distribution
Why is this the correct answer?
In a young shoot, the tip detects directional light and coordinates the distribution of auxin. Auxin becomes more concentrated on the shaded side, where it promotes cell elongation, causing the shoot to bend towards the light. Covering the tip can reduce light perception and disrupt this unequal distribution, so bending may decrease. Thus option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Plant hormones.
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