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Question

Movement of gases across plasma membrane occurs through ______________
  1. Osmosis
  2. Diffusion
  3. Imbibition
  4. None of these

A
Osmosis
B
Imbibition
C
Diffusion
D
None of these
Solution
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Diffusion is a process in which the gaseous molecules spreads due to their kinetic energy and movement of molecules from their higher concentration to their lower concentration. Hence, The correct answer is option B.

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