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The Fundamental Unit of Life — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life1 Mark
MCQ
A cell shrinks on being kept in a solution. The solution is:
  • A
    Isotonic.
  • B
    Hypotonic.
  • C
    Hypertonic.
  • D
    None of the above.
✓

Answer

  1. Hypertonic.

Explanation:

If a cell gets reduced in size or shrinks when placed in solution, the solution is hypertonic because a hypertonic solution has lesser concentration of solvent molecules than the fluid inside the cell so the solvent molecules are forced outside the cell from the region of higher concentration to the lower concentration by the process of exosmosis. The cell turns flaccid.

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