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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.
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- Biological species concept emphasises on
- Filtration pressure in human kidneys is about
- Which of the following is called emergency gland of the body?
- Tonoplast is the membrane surrounding the
Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The Taj Mahal is threatented due to the effect of
- Biological species concept emphasises on
- Filtration pressure in human kidneys is about
- Which of the following is called emergency gland of the body?
- Tonoplast is the membrane surrounding the
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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