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Byju's Answer
Standard XII
Biology
Transpiration
Which factor ...
Question
Which factor does not contribute to stomatal opening ?
A
Light
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B
Low pH
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C
Reduced
C
O
2
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D
Water
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Solution
The correct option is
B
Low pH
Light induces stomatal opening as photosynthesis takes place through it.
Absorption of water by guard cells causes them to swell and open up the stomatal pore.
Low or reduced Carbon dioxide causes stomata to open up so more of it can be absorbed for the synthesis of food.
pH has no significant contribution to the opening or closing of stomata.
So the correct answer is 'Low pH'.
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Similar questions
Q.
Which of the following does not happen during stomatal opening and closing?
Q.
The opening and closing of the stomatal pores depends upon:
(a) oxygen
(b) water in guard cells
(c) temperature
(d) concentration of CO
2
in stomata
Q.
Which of the following processes does not contribute to the
C
O
2
pool in the atmosphere?
Q.
Which of these do not cause stomatal opening?
Q.
Assertion: Light is a very important factor in transpiration
Reason: It induces stomatal opening .
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