Question

Fill in the blanks by choosing the correct alternative from those given in the brackets.

e. Absorption of water in plants takes place through the roots by the process of _________. (osmosis/diffusion)

• A. Osmosis
• B. Diffusion

Answer 1

Diffusion:

Diffusion is a method of transport that involves the free flow of molecules from a region of higher concentration to a region of lower concentration.

Osmosis:

1. Osmosis is the flow of solvent molecules from a region of higher solvent concentration to a region of lower solvent concentration across a semipermeable membrane.
2. Osmosis helps in the absorption of water through the root hair cells.
3. The outer covering of roots acts as a semipermeable membrane and water molecules move from soil (high solvent concentration) towards the roots (low solvent concentration).

Final answer: Absorption of water in plants takes place through the roots by the process of osmosis.