Water is the essential component of
Protoplasm
Diffusion
Stomata
Hair root
In a flaccid cell turgor pressure (TP) is _____?
One
Three
Zero
Two
The hormone that controls closure of stomata in response to water stress is:
Auxins
Cytokinnis
Gibberellins
Abscisic acid
Which theory suggest that the sap in the xylem forced upwards under hydrostatic pressure developed in root?
Physical force theory
Root Pressure theory
Capillary Force theory
None of these
98% of the total water uptake of a plant is through which process?
Imbibition
Osmosis
Passive absorption
Osmotic mechanisms
What is the net movement of water molecules through a differentially permeable or semi permeable membrane from low solute concentration to the region of high solute concentration?
Turgor Pressure
Wall Pressure
The amount of water which are can’t be absorbed by the plants is said to be:
Runway water
Chesard
Echard
Hygroscopic water
In which mechanisms water absorption does not require directly an expenditure of energy?
Non-osmotic mechanism
Osmotic mechanism
Active absorption
In a turgid cell OP=
WP
TP
DPD
Which part of the cell is semi permeable membrane?
cytoplasm
plasma membrane
lipids
none of the above