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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
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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
- Cristae of mitochondria help in
- The technique of production of monoclonal antibodies was developed by
- A professor kept some moist seeds in an airtight jar and started lecturing
- The first stable product of fixation of atmospheric nitrogen in leguminous plants is:
- The protein coat of virus 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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