The shade of a tree is cooler than the shade of a roof, due to
guttation
green leaves
transpiration
photosynthesis
Wilting occurs when
relative humidity is high
rate of transpiration is equal to the rate of absorption
rate of transpiration is higher than the rate of absorption
rate of absorption is higher than the rate transpiration
When water moves through a semipermeable membrane, which of the following is created?
OP
SP
TP
WP
In a plant cell, shrinking of protoplasm is called
turgidity
flaccidity
plasmolysis
deplasmolysis
In a fully turgid plant cell, which of the following is zero ?
DPD
equal to wall pressure
equal to turgor pressure
none of these
The ultimate cause for the movement of water against gravity in a tree is
osmosis
imbibition
Root pressure is due to
active absorption
passive absorption
increase in transpiration
decrease in transpiration
The selective permeability identifies the process of
diffusion
The term ' water potential ' was proposed by
Bose
Dixon
Godlewski
Slatyer and Taylor
Loss of water from the tips of leaves is called
respiration
bleeding
