BSSE General Science 1430 Practice Questions - Botswana Senior Secondary Education Certificate General Science (Syllabus 1430) Exam

What happens to a plant cell when placed in a concentrated (hypertonic) salt solution?

It absorbs water by osmosis and bursts (lysis). Water leaves the cell by osmosis, causing the cytoplasm to shrink away from the cell wall (plasmolysis). It gains solutes by active transport and swells until turgid. No net movement of water occurs because the cell wall prevents water loss.

Correct Answer:

Water leaves the cell by osmosis, causing the cytoplasm to shrink away from the cell wall (plasmolysis).

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