Class 11 Biology Plant Physiology Plant Growth and Development



Importance of day length in flowering of plants was first shown in
(a)
Cotton
(b)
Tobacco
(c)
Lemna
(d)
None of the above
Correct answer: (b) 
Solution: The reaction of the length of day and night on the flowering of the plants is known as photoperiodism. Angiosperms make use of a photoreceptor protein such as phytochrome to sense the changes. The first set of experiments were conducted successfully in Maryland on tobacco to show the effect of day length on flowering.
So, the correct answer is option B.

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Similar topics
plant growth and development
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Connecting you to a tutor in 60 seconds.
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play store logo
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plant growth and development
transport in plants
respiration in plants
mineral nutrition
morphology of flowering plants