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What is the site of perception of photoperiod necessary for induction of flowering in plants?

1. Lateral buds
2. Pulvinus
3. Shoot apex
4. Leaves

Correct answer: Leaves

Solution

Leaves perceive the photoperiod because they contain the light-sensitive system that measures day length and triggers production of the flowering signal. That signal is then transported to the shoot apex, where flowering is initiated.

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