The movement of water molecules from a region of higher water potential to a region of lower water potential (through membrane)
Correct answer: B. Osmosis
- A. Deffusion
- B. Osmosis
- C. Active transport
- D. None of these
Explanation
Osmosis is the net movement of water through a selectively permeable membrane from higher water potential to lower water potential. Diffusion is a broader term for particle movement and does not specifically require water crossing a membrane, so students may choose a.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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