CBSE Class 11-science - Transpiration, Root Pressure Videos
Ascent of Sap
This video explains the role of cohesion and adhesive force in ascent of sap.
- distinguish between osmotic pressure and osmotic potential
- Epithem and Water stoma;
- State the significance of root pressure.
- Define root pressure.
- What is guttation?
- State the rate of the upward flow of water in the xylem of plants.
- What causes the stomata to open or close?
- Name the system in plants which maximises the availability of CO2 and minimises water loss.
- How does turgidity of guard cells help stomata to open or close?
- State the factors which regulate the opening and closing of stomata.
