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A metal ion involved in stomatal regulation is
Options
(a) iron
(b) potassium
(c) zinc
(d) magnesium
Correct Answer:
potassium
Explanation:
Stomata are small pores in plant epidermis,present in large numbers,particularly in leaves,through which gaseous exchange occurs.Each stomata has 2 bean or kidney shaped cells called guard cells surrounded by a few specialised epidermal cells called subsidiary cells.The opening and closing of stomatal aperture is regulated by turgidity of guard cells which is brought about by entry/exit of K⁺ ions.
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Topics: Transport and Nutrition in Plants
(163)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Third generation pesticide is
- Glaucoma is an eye disease arising from
- The second maturation division of the mammalian ovum occurs
- A gene showing codominance has:
- Best type of pyramid which is always true is
Topics: Transport and Nutrition in Plants (163)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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