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1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of
A
weak gravitational pull
B
transpiration pull
C
lignified thick walls
D
cohesion and adhesion.
2
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
A
no movement of water
B
equilibrium between the two
C
movement of water from cell A to B
D
movement of water from cell B to A.
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The translocation of organic solutes in sieve tube members is supported by
A
cytoplasmic streaming
B
root pressure and transpiration pull
C
P-proteins
D
mass flow involving a carrier and ATP.
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Potometer works on the principle of
A
osmotic pressure
B
amount of water absorbed equals the amount transpired
C
root pressure
D
potential difference between the tip of the tube and that of the plant.
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