Question

Oxygen is absorbed by living cells by the process of


a. Osmosis

b. Plasmolysis

c. Diffusion

d. All the above

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Answer 1

Answer:

C : DIFFUSION.............

Answer 2

Oxygen is absorbed by living cells through the process of Diffusion. Hence, Option 'C' is correct.

• Osmosis is a process of movement of particles from high concentration to low concentrations through a semipermeable membrane till equilibrium. Hence, option 'A' is incorrect.
• Plasmolysis means generally shrinkage of the protoplasm of the plant cell due to more loss of water. Hence, option 'B' is also incorrect.
• Diffusion is mainly a process in gases where a substance moves from higher concentration to low concentration.
• Diffusion is a very slow process and is independent of a living system.
• In our body, when oxygen reaches the alveoli of the lungs, it enters our blood by diffusion through the very thin alveolar capillaries.

So, Oxygen is absorbed by living cells through the process of Diffusion. Hence, Option 'C' is correct.

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