Question

Assertion (A): Diffusion does not meet the energy requirement of multicellular organism.Reason (R): Diffusion is a fast process but occurs only at the surface of the body *

1 point

A is true, R is false

A is false, R is true

Both A and R are false

Both A and R are true

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Answer 1

Answer:

A is correct but B is wrong.

Explanation:

diffusion occurs even in small intestine, it also helps in the transport of glucose and amino acid from the bloodstream into the cell.

Answer 2

A is true, R is false

• Multicellular organisms have a complex body design. In multicellular organisms like human beings, there is a division of labour among the different organs and organ system.
• So, to fulfill the energy requirements of any multicellular organism diffusion alone cannot meet the requirements. It would be very difficult for cells to transport oxygen to each and every part as it's a slow process. Hence, given assertion is true.
• Diffusion is not a fast process. It's takes time for the particles to diffuse across the membrane as it's a passive process. Hence, the given reason is false.