WAEC Biology 2022 Objective — Question 7

Question 7 of 50 from the West African Examinations Council (WAEC) Biology 2022 Objective paper, with the correct answer and a full explanation.

The process that brings about the shrinking of a Spirogyra cell when placed in a strong solution is

A. osmosis
B. autolysis
C. plasmolysisCorrect
D. diffusion

Explanation

Plasmolysis is the shrinking of a plant cell's cytoplasm when placed in a hypertonic (strong) solution, due to loss of water from the cell by osmosis.

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