Assignment: (1) How does water Xylem sap Mesophyll ce Stoma Outside air v -100.0

Question

Assignment: (1) How does water Xylem sap Mesophyll ce Stoma Outside air v -100.0 MPa Leaf y (air spaces) potential in the soil change under drought conditions? r molec -7.0 MPa Leaf (cell walls) 1.0 MPa Adhesion by (2) How ill 1 Xylem hydrogen bone t cells Cell wa open/closing of stomata change water potential in the leaves? Trunk xylem v -0.8 MPa Cohesio Cohesion and hydroge adhesion in (3) How will changes t the xylem in humidity (high humidity/low humidity) change Trunk xylem y the outside air water potential? Soil Water mole Root hait Soil particle Water -0.6 MPa Water uptake from so =-0.3 MPa

Explanation / Answer

1 Under drought conditions transpiration from earth surface takes place due to this the moisture level in the soil decreases and since soil behaves like a bundle of capillaries therefore the water level in the soil do decrease because of this.

2. In order to decrease the transpiration from the plants leaves the stomata don’t open that often to maintain water level of the plant.

3. High humidity will increase the amount of water vapour present in the air and so does the vice versa.

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