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Which one of ...

Question

Which one of the following hormones causes dwarf bean plants to grow tall? (1 mark)

A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene

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Solution

The correct answer is option B.
Gibberellins are growth hormones that stimulate cell elongation and cause plants to grow taller. So, if dwarf beans are treated with a dose of gibberellins, they can grow to the same height as the tall varieties.

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Similar questions

Q. Which one of the following hormones causes dwarf bean plants to grow tall? (1 mark)

A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene

Which one of the following hormones causes dwarf bean plants to grow tall?

Q. Auxin, cytokinin, and gibberellin are hormones that ________ growth in plants.

Q. One of the following plant hormones is responsible for the phenomenon of phototropism in plants. This is :
(a) gibberellin
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(c) cytokinin
(d) auxin

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(a) gibberellin
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