Choose the correct answer from the alternatives given.
Which of the following is not a physiological change related to photoperiodism?

Seed germination

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Root branching

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Breaking bud dormancy

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Onset of senescence

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Solution

The correct option is B Root branching
Photoperiodism is responsible for Seed germination, breaking of seed dormancy and onset of senescence as it is directly dependent on the exposure of light.
The root branching is not influenced by the photoperiodic exposure of the plant.
So, the correct option is 'Root branching'.

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