2. Plant Physiology
(i) Absorption by roots, imbibition, diffusion and osmosis; osmotic pressure, root pressure; turgidity and flaccidity; plasmolysis and deplasmolysis; the absorption of water and minerals; active and passive transport (in brief); The rise of water up to the xylem; Forces responsible for ascent of sap.
- Understanding of the processes related to absorption of water by the roots.
- Characteristics of roots, which make them suitable for absorbing water.
- Structure of a single full-grown root hair.
- A general idea of Cohesive, Adhesive forces and transpirational pull.
- Experiments to show the conduction of water through the xylem.