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The Fundamental Unit of Life — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life1 Mark
MCQ
The structure which forms a barrier between the protoplasm of the cell and its external environment in an animal cell, is:
  • A
    Cell coat.
  • B
    Cell wall.
  • C
    Plasma membrane.
  • D
    Mucilage.
✓

Answer

  1. Plasma membrane.

Explanation:

In animal cell it is plasma membrane, in plant cell it a a double barrier of plasma membrane and cell wall. Nuclear membrane is the barrier between nuclear material and other cell material. Tonoplast is the boundary/ outer wall of a vacuole.

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