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Q.

Assertion (A): Auxins are used to promote rooting in stem cuttings and to enhance flowering in certain plants like pineapples.
Reason (R): Auxins are plant hormones that regulate various developmental processes by influencing cell growth and division.

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a

Both A and R are true, and R is the correct explanation of A.

b

Both A and R are true, but R is not the correct explanation of A.

c

A is true, but R is false.

d

A is false, but R is true.

answer is A.

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Detailed Solution

They help to initiate rooting in stem cuttings, an application widely used for plant propagation.

auxins have been used extensively in agricultural and horticultural practices as it  regulates various developmental processes by influencing cell growth and division.

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Assertion (A): Auxins are used to promote rooting in stem cuttings and to enhance flowering in certain plants like pineapples.Reason (R): Auxins are plant hormones that regulate various developmental processes by influencing cell growth and division.