PLANT WATER RELATIONSHIPS
1) Pick out the incorrect statement
A.
Osmosis is the movement of water
from its higher concentration to lower concentration.
B.
Osmosis is an energy-dependent process
C.
Plasma membrane of plants are semi-permeable
D.
The osmosis occurs through a semipermeable membrane.
Options:
1)
A and B
2)
B and C
3)
A and C
4)
D and A
2) Pick out the incorrect statement.
A.
Osmotic pressure is the minimum pressure required to stop the entry
of water into an osmotically active solution.
B.
Osmotic pressure is measured in Bars/atm
- C. Osmotic pressure is directly proportional to the difference in
solute concentration on each side of the membrane.
Options:
1)
A and C
2)
B and C
3)
A and B
4)
All of the above.
3) Tonicity is the measure
of the osmotic potential gradient of two solutions separated by a semipermeable
membrane. Find the correct match.
|
I.
Solution with equal solute content as another solute |
a)
Hypertonic solution |
|
II.
Solution with higher solute concentration than the other
solution |
b)
Hypotonic solution |
|
III.
Solute content lower than the other solution |
c)
Isotonic solution |
Options:
1)
I-a, II-b, III-c
2)
I-b, II-a, III-c
3)
I-c, II-a, III-b
4)
I-b, II-c, III-a
4) When a plant cell is placed in a hypotonic solution, it will
become
1)
Flaccid
2)
turgid
3)
no change
5) Pick out the incorrect statement
1)
When a cell is placed in a hypertonic solution, it will become Flaccid.
2)
The shrinkage of protoplast from the cell wall is called
plasmolysis
3)
The plasmolysis is reversible
4)
Plasmolysis is irreversible.
6) Mark the correct answer.
1)
in solutions, the value of water potential is considered to be
negative
2)
in solutions, the value of water potential is always considered to
be positive
3)
in solutions, the value of water potential may be positive or
negative
4)
in solutions, the value of water potential is zero
Answers: 1-2, 2-4, 3-3, 4-2, 5-4,
6-1
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