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Question

Which of these regulate stomatal movements?
(a) IAA
(b) GA3
(c) Zeatin
(d) ABA

A
a, c
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B
b, c
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C
c, d
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D
b, d
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Solution

The correct option is B c, d
Hormones that regulate stomatal movements are zeatin and ABA. These hormones coordinate the opening and closing of stomata.
So, the correct answer is 'c,d'.

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