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Q.

Select the incorrect statement about photoperiodism.

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a

The site of perception of light/dark duration are the leaves

b

Flowering in certain plants depends not only on a combination of light and dark exposures but also their relative durations.

c

The hypothesized hormonal substance migrates from shoot apices to leaves for inducing flowering.

d

Shoot apices modify themselves into flowering apices prior to flowering.

answer is C.

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Detailed Solution

It has been hypothesised that there is a hormonal substance(s) that is responsible for flowering. This hormonal substance migrates from leaves to shoot apices for inducing flowering only when the plants are exposed to the necessary inductive photoperiod.

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