Question

select the correct statement about diffusion in plants
1 movement of molecules by diffusion is an active process
2 energy expenditure takes place in simple diffusion
3 in diffusion molecules move unidirectionally
4 diffusion is only means for gaseous movement within the plant body
the ans is 4 but i think it should also be 3
plz explain the correct option​

Answer 1

Answer:

even i think it is 4 because it has a reason

Answer 2

Answer:

Option 4 – diffusion is only means for gaseous movement within the plant body is the answer.

Explanation:

• Diffusion is the process of movement of molecules from a region of higher concentration towards the region of lower concentration i.e. along the concentration gradient.
• It is a passive process and no energy is required for it.
• In diffusion, the molecules move in a random fashion and not unidirectional.
• Diffusion occurs maximum in gaseous state, then liquid & least in solid state.
• In plants, the gaseous molecules generally move through diffusion itself.

Hence, diffusion is the only fastest & easiest mean for gaseous movement within the plant body.

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