WAEC Biology 2015 Objective — Question 6

Question 6 of 50 from the West African Examinations Council (WAEC) Biology 2015 Objective paper, with the correct answer and a full explanation.

When a spirogyra filament is placed in a concentrated salt solution for 30 minutes, the cell would become

A. plasmolysedCorrect
B. turgid
C. shortened
D. elongated

Explanation

Since the salt solution is hypertonic to the cell content of Spirogyra, the organism loses water to the solution by osmosis and eventually becomes plasmolysed.

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