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The leaves of Mimosa pudica droop down, when touched, due to
Options
(a) nyctinasty
(b) seismonasty
(c) photonasty
(d) epinasty
Correct Answer:
seismonasty
Explanation:
Nastic movements occur in response to a stinulus. It is independent of its direction. They are shown by bifacial organs (leaves, sepals, petals) and are in response to diffused external stimulus. Seismonastic movements are due to shock or touch stimulus. Such movements are shown by Mimosa pudica. The leaf of Mimosa is compound having four pinna and each pinna is having many pinnules. If a terminal pinnule is touched, the whole leaf droops down. This is due to fact that at the bases of pinnules, pinna and wh
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Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In the light of carrier concept the transport of ion across the membrane is
- Which one of the following microbes forms symbiotic association with plants
- Which one of the following is not a sensory structure in cockroach
- Pond is an example of which of the following ecosystem?
- Atmospheric nitrogen-fixation is carried by
Topics: Plant Growth and Development (126)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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