Botany - Plant Growth and Development Question with Solution | TestHub
In an experiment, two long day plants belonging to the same species are selected. In plant A, all leaves are covered in such a way that no light can reach them but the floral buds are exposed and light can reach them. In plant B, all floral buds are covered in such a way that no light can reach them but the leaves are exposed and light can reach them. Both these plants are now subjected to light for a duration greater than their critical photoperiod. Which of these results will be obtained?
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Answer:
Solution:
The site of perception of light/dark duration is the leaves. It has been hypothesized 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. In plant B, leaves are exposed to light and hence flowering occurs
