Multiple choice

Turgor pressure develops in the epidermal cells of roots when there is:

  1. high water potential in the cytoplasm of cortical cells

  2. entry of water into root hair and increase in volume of cell sap

  3. a large vacuole in root hair filled with cell sap

  4. osmotic diffusion of water into the pericycle through passage cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Turgor pressure develops when water enters the root hair by osmosis, increasing the volume of cell sap (vacuolar contents). This influx against the cell wall creates turgor. Option A incorrectly references water potential in cortical cells. Option C describes a large vacuole but not the pressure mechanism. Option D describes pericycle transport, not root hair turgor.

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