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The most abundant naturally occurring plant hormone is
Options
(a) indole-3 acetic acid
(b) ABA
(c) cytokinin
(d) IBA
Correct Answer:
indole-3 acetic acid
Explanation:
IAA brings about cell wall extension by activating proton pump which maintains the cell wall in an acidic condition of around 4 pH. Under these conditions, the cell wall pressure is reduced and water enters the cell, accompaineed by an increase in cell volume. As the cell increases in volume, the new cell wall material becames necessary to stabilise the wall. IAA is naturally occuring auxin.It also promotes cell enlargements, cell division in vascular cambium, root intiation enlargement, cell division in va
Related Questions: - The natural cycles of carbon, oxygen, nitrogen, water and phosphorus, sulphur, etc
- The first action spectrum of photosynthesis which was described by Engelmann
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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
- The natural cycles of carbon, oxygen, nitrogen, water and phosphorus, sulphur, etc
- The first action spectrum of photosynthesis which was described by Engelmann
- During movement of electron through ETC
- Seed coat is not thin membranous in
- Steps taken by the Government of India to control air pollution include
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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