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Sleep movements of leaves in some plants are due to
Options
(a) excess of respiration
(b) leaves stop photosynthesis
(c) excess of transpiration
(d) osmotic changes at the base of leaves
Correct Answer:
osmotic changes at the base of leaves
Explanation:
Sleep movement or nyctinasty (sleep movement during night) occurs in the leaves of many legumes and Oxallis is due to turgor changes in response to darkness. The leaves fold at night but open during the day. Leaves of Mimosa pudica also show sleep movement, called as seismonasty (shock movement) in response to physical contact, injury, electric current etc. The movement occurs due to osmotic changes.
Related Questions: - Which of the following are correctly matched with respect to their taxonomic
- In a mammalian cell the longest and the most active phase of the cell cycle
- One of the representatives of phylum Arthropoda is :
- Who discovered that CO is taken in and O is released by green plants
- Mass of living matter at a trophic level in an area at any time is called
Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following are correctly matched with respect to their taxonomic
- In a mammalian cell the longest and the most active phase of the cell cycle
- One of the representatives of phylum Arthropoda is :
- Who discovered that CO is taken in and O is released by green plants
- Mass of living matter at a trophic level in an area at any time is called
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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