Question

X is a phytohormone that induces dormancy in a

seed to help it tide through unfavourable

environmental stresses. Its effects are overcome

by phytohormone Y which helps in germination of

seed on arrival of favourable environmental

conditions.

Select the option regarding phytohormones X and

Y.

a) X induces bolting in rossette plants whereas Y

causes senescence in leaves.

b) Mevalonic acid serves as a precursor in the

synthesis of both X and Y

c) X reduces the rate of transpiration by leaves by

closing stomata whereas Y is a gaseous hormone

that promotes ripening of fruits.

d) X and Y play an important role in

morphogenesis during tissue culture.​

Answer 1

Answer:

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