Question

Movement of molecules from their higher concentration to their lower concentration is

• A. Diffusion
• B. Osmosis
• C. Active transport
• D. Transpiration

Answer 1

The correct option is A

Diffusion

The correct option is (A):
Explanation for the correct option:

1. Movement of molecules from high to low concentration is called diffusion.
2. No energy is required.

Explanation for incorrect options:

Option (B):

1. Movement of water from a region of its higher concentration to a region of its lower concentration through a semipermeable membrane is called osmosis.

Option (C):

1. Movement of molecules from their lower concentration to their higher concentration through a cell membrane using energy is called active transport.

Option (D):

1. Loss of water vapor from the surface of the plant, mainly by stomata on the leaves is transpiration.

Final answer: Movement of molecules from their higher concentration to their lower concentration is diffusion.