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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
- Which one of the following statements is correcty with respect to kidney
- The number of mitotic cell division required to produce 256 cells from single cell
- Which of the following sets of cell organelles contains DNA?
- What is true about RBC s in humans?
- Which part of human brain is concerned with the regulation of body temperature?
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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