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1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Stomatal movement is not affected by
A
O2 concentration
B
temperature
C
CO2 concentration.
D
light
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Which of the following facilitates opening of stomatal aperture?
A
Decrease in turgidity of guard cells
B
Radial orientation of cellulose microfibrils in the cell wall of guard cells
C
Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells
D
Contraction of outer wall of guard cells
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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The water potential of pure water is
A
less than zero
B
more than zero but less than one
C
more than one
D
zero
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap?
A
Acidic
B
Alkaline
C
Low refractive index
D
Absence of sugar
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