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

Ethylene

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Gibberellin

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Auxin

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Cytokinin

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Solution

The correct option is B Gibberellin
Gibberellins are growth hormones that stimulate cell elongation in stem 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

(a) What is the genotype of dwarf plants which always produced dwarf offspring ?

(b) What is the genotype of tall plants which always produced tall offspring ?

(c) What is the genotype of (i) dwarf plants, and (ii) tall plants, whose parental cross always produces tall offspring ?

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

F_{1}

F_{2}

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