Plant Water Relations: Quiz – 1 10


Solve 15 Online MCQs (Multiple Choice Questions) on Plant Water Relations. Quiz Test No. 01
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Plant Water Relations: Quiz - 1

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Question 1
Which one of the following is used for measuring the rate of transpiration?
A
Ganong’s potometer
B
Moll's experiment
C
Auxanometer
D
Respirometer
Question 2
‘Pulsation theory’ to explain ascent of sap was proposed by
A
Dixon and Jolly
B
J .C. Bose
C
Curtis and Clark
D
None of the above.
Question 3
0.1 M solution of a solute has a water potential of
A
-2.3 bars
B
0 bar
C
22.4 bars
D
+2.3 bars
Question 4
A cell becomes turgid when placed in
A
Isotonic solution
B
Hypertonic solution
C
Hypotonic solution
D
All of these
Question 5
Stomata of CAM plants
A
never open
B
are always open
C
open during the day and close at night
D
open during the night and close during the day
Question 6
A cell placed in hypertonic solution plasmolysis; the space between the cell wall and plasmolysed contents is filled with
A
Water
B
Cell sap
C
Hypertonic solution
D
Hypotonic solution
Question 7
A cell when placed in solution gets plasmolysed. What is largely present in between the cell wall and the plasmolysed contents?
A
Water
B
Cell sap
C
Hypotonic solution
D
Hypertonic solution
Question 8
A small mesophytic twig with green leaves is dipped into water in a big beaker under sunlight. It demonstrates
A
Photosynthesis
B
Respiration
C
Transpiration
D
None of these
Question 9
A thin film of water is held by the soil particle under the influence of internal attractive force. It is called
A
Capillary water
B
Combined water
C
Hygroscopic water
D
Gravitational water
Question 10
When a cell is fully turgid, which one of the following is zero?
A
Turgor pressure
B
Wall pressure
C
Diffusion pressure deficit
D
Osmotic pressure
Question 11
Active K+ exchange mechanism for the opening and closing of stomata was given by
A
Devlin
B
Levitt
C
Seath
D
Khorana
Question 12
The plants die due to wilting when
A
available light is reduced to half
B
xylem is blocked
C
a few roots are broken
D
phloem is blocked
Question 13
After heavy rain fall with poor drainage, leaves of many plants wilt due to
A
Root rot
B
Poor soil aeration
C
High salt concentration
D
Low soil temperature
Question 14
The direction and the rate of water movement from cell to cell is based on
A
Diffusion pressure deficit
B
Incipient plasmolysis
C
Turgor pressure
D
Wall pressure
Question 15
At very low temperature, plants do not grow. This is due to
A
Desiccation of plants
B
Solarisation of plants
C
Cell cannot grow
D
Cell wall will be inhibited
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10 thoughts on “Plant Water Relations: Quiz – 1

  • ruchi

    questions are really helpful for undertanding the basics

  • anamika

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