Question

Name the phenomenon that begins when sugar solution is separated from water by a semipermeable membrane.

• A. Osmosis
• B. Diffusion
• C. Imbibition
• D. Translocation

Hint:

Osmosis → solvent movement + semipermeable membrane
Diffusion → no membrane required Always check for the presence of a semipermeable membrane.

Answer 1

The Correct Option is A

Step 1: Understand the given condition. The system consists of:
Sugar solution on one side,
Pure water on the other side,
A semipermeable membrane separating them.
Step 2: Recall the definition of osmosis. Osmosis is the movement of solvent (water) molecules through a semipermeable membrane from a region of higher water potential (dilute solution or pure water) to a region of lower water potential (concentrated solution).
Step 3: Eliminate other options.
Diffusion: Occurs without a semipermeable membrane.
Imbibition: Absorption of water by colloids or solids.
Translocation: Transport of food materials in plants.
Step 4: Identify the correct phenomenon. Since the key requirement—semipermeable membrane—is present, the phenomenon is osmosis.
Hence, the correct answer is \[ \boxed{\text{Osmosis}} \]