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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: - A few normal seedling of tomato were kept in a dark room. After few days
- Acid rain is caused by increase in the atmospheric concentration of:
- Which is used in production of insulin by genetic engineering
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- Match the columns and identify the correct option.
Column-I Column-II
Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A few normal seedling of tomato were kept in a dark room. After few days
- Acid rain is caused by increase in the atmospheric concentration of:
- Which is used in production of insulin by genetic engineering
- Rough endoplasmic reticulum synthesises
- Match the columns and identify the correct option. Column-I Column-II
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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