Distinguish between endosmosis and exosmosis, and give one example of each.
Absorption by Roots
Original Khojo Papers practice question — not from a past board paper.
Water leaves the cell by osmosis, the vacuole shrinks and the protoplasm pulls away from the cell wall. The cell is said to be plasmolysed and becomes flaccid.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Placing it back in pure water reverses the process, which is called deplasmolysis.
From the same topic and chapter, at a similar level.
Distinguish between endosmosis and exosmosis, and give one example of each.
Absorption by Roots
What is root pressure and what part does it play in the ascent of sap?
Absorption by Roots
Distinguish between active and passive absorption of mineral salts by roots.
Absorption by Roots
Describe the structure of a root hair and state how it is adapted for absorption.
Absorption by Roots
Define turgor pressure and wall pressure, and state the importance of turgidity to a plant.
Absorption by Roots
Describe an experiment to demonstrate osmosis using a potato osmoscope.
Absorption by Roots