Question 7
Plasmolysis in a plant cell is defined as

(a) break down (lysis) of the plasma membrane in hypotonic medium
(b) shrinkage of cytoplasm in a hypertonic medium
(c) shrinkage of nucleoplasm
(d) none of the above

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Solution

(b) shrinkage of cytoplasm in a hypertonic medium

Shrinking of the protoplasm which comprises of the cytoplasm and the nucleus, away from the cell wall of a living plant cell due to an outward osmotic flow (loss) of water is called plasmolysis.

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Question 7
Plasmolysis in a plant cell is defined as

(a) break down (lysis) of the plasma membrane in hypotonic medium
(b) shrinkage of cytoplasm in a hypertonic medium
(c) shrinkage of nucleoplasm
(d) none of the above

Q. Assertion :Shrinkage of the protoplast of a cell occurs under the influence of hypertonic solution. Reason: Hypertonic solution causes plasmolysis.

Q. Arrange the following into its correct order of occurence.

i. plasmolysis
ii. movement of water out of cytoplasm
iii. shrinkage of protoplasm away from the cell wall
iv. movement of water out of vacuole
v. cell in hypertonic solution

Q. There is shrinkage of protoplasm, when a cell is kept in hypotonic solution.

Shrinkage of cytoplasm and the cell membrane from the cell wall is called ___ .

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Question 7 Plasmolysis in a plant cell is defined as (a) break down (lysis) of the plasma membrane in hypotonic medium (b) shrinkage of cytoplasm in a hypertonic medium (c) shrinkage of nucleoplasm (d) none of the above

(b) shrinkage of cytoplasm in a hypertonic medium Shrinking of the protoplasm which comprises of the cytoplasm and the nucleus, away from the cell wall of a living plant cell due to an outward osmotic flow (loss) of water is called plasmolysis.

Question 7
Plasmolysis in a plant cell is defined as

(a) break down (lysis) of the plasma membrane in hypotonic medium
(b) shrinkage of cytoplasm in a hypertonic medium
(c) shrinkage of nucleoplasm
(d) none of the above

(b) shrinkage of cytoplasm in a hypertonic medium

Shrinking of the protoplasm which comprises of the cytoplasm and the nucleus, away from the cell wall of a living plant cell due to an outward osmotic flow (loss) of water is called plasmolysis.