Same chapter3 marksDifficulty: Medium
Distinguish between endosmosis and exosmosis, and give one example of each.
Absorption by Roots
3 marksDifficulty: Medium
Define turgor pressure and wall pressure, and state the importance of turgidity to a plant.
Original Khojo Papers practice question — not from a past board paper.
Answer
Turgor pressure is the outward pressure the cell sap exerts on the cell wall when water enters the cell. Wall pressure is the equal and opposite inward pressure of the wall on the contents. Turgidity keeps the soft parts of the plant firm and erect, opens the stomata and drives the growth of cells.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A plant wilts when its cells lose turgidity.
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