Stomata of a plant open due to
influx of hydrogen ions
influx of calcium ions
influx of potassium ions
efflux of potassium ions
The escape of sap from the cut or ruptured parts of the plant is called
guttation
transpiration
bleeding
clotting
In which condition the transpiration pull is maximum?
Open stoma, dry atmosphere and moist soil
closed stomata, dry atmosphere and moist soil
closed stoma, dry atmosphere
open stoma, high humid atmosphere and dry soil
The rate of transpiration will be very less in a situation where
ground water is sufficient
wind is blowing
hot and dry environment
relative humidity is high
When water is lost in the form of droplets it is called
evaporation
Adhesive and cohesive forces are
physical forces
chemical forces
electrical forces
magnetic forces
From root hairs water and salts pass into epidermal cells _______ cells, endodermis and finally into xylem.
guard cells
cortical
stomata
phloem
Opening of the leaf through which transpiration occurs is called
ostia
Guttation is caused by
osmosis
root pressure
osmotic pressure
Strong attraction between water molecules is called
Adhesive
Ascent of sap
Cohesion
Osmosis
