By which physical process do water molecules move across a selectively permeable membrane from higher to lower water potential?
Answer and explanation
Correct answer: A. Osmosis
- Step 1: Osmosis is the net movement of water molecules from a region of higher water potential to lower water potential across a partially permeable membrane. Step 2. It is a specialized form of passive diffusion restricted strictly to water molecules across semipermeable barriers. Answer: Osmosis. Why not the others: Diffusion applies to any solute or gas particle; active transport requires metabolic energy against a gradient; transpiration is water evaporation.
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