| ⇦ | 
| ⇨ |
The ions extruded by auxin during cell wall extension is
Options
(a) potassium
(b) sodium
(c) magnesium
(d) hydrogen
Correct Answer:
hydrogen
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, accompained 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 and apical dominance.
Related Questions: - Calyptra is seen in
- ECG records
- Which of the following changes involved in irrelevant in the evolution of man
- 3-phosphoglyceric acid (PGA) as the first CO₂ fixation product in algal
- Sphygmomanometer measure
Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Calyptra is seen in
- ECG records
- Which of the following changes involved in irrelevant in the evolution of man
- 3-phosphoglyceric acid (PGA) as the first CO₂ fixation product in algal
- Sphygmomanometer measure
Topics: Plant Growth and Development (126)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply