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07/09/2020 4:32 pm
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Which of the following induces dormancy?
(a) Auxin
(b) Cytokinin
(c) Both (a) and (b)
(d) Abscisic acid
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07/09/2020 4:33 pm
(d) Abscisic acid
Explanation:
Abscisic acid (ABA) induces dormancy. Robinson and Warming (1964), isolated a substance responsible for dormancy in Acer pseudoplatanus, and named it as dormin. This hormone was similar to absicissin. It is a naturally occurring hormone that is present in all vascular plants and some mosses but is not present in bacteria, algae, fungi and liverworts. This hormone is responsible for dormancy.