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Which of the following is most important factor in regulation of transpiration?
Options
(a) humidity
(b) light
(c) temperature
(d) all of these
Correct Answer:
all of these
Explanation:
A number of external and internal factors influence the rate of transpiration. Among the internal factors are root/shoot ratio, leaf area and leaf structure. External or environmental factors, include
(i) Relative humidity – If R.H. is low then rate of transpiration depends upon difference in vapour pressure or internal atmosphere of leaf and external environment (i.e., V.P gradient) and it is, therefore, that no transpiration occurs when stomata are fully open but relative humidity is 100%.
(ii) Light
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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
- Soil conservation is a practice in which
- In plant biotechnology, root tumours are induced by
- A red coloured oxygen containing pigment present in muscle
- Ethylene is involved in
- Which of the following is not a function of zone of cell differentiation in
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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