Chemiosmotic theory of ATP synthesis, in the chloroplast and mitochondria, is based on
proton gradient
membrane potential
accumulation of K ions
accumulation of Na ions
The ultimate cause for the movement of water against gravity in a tree is
osmosis
imbibition
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
In old trees or woody plants, transpiration occurs by means of
bark
cork
stomata
lenticels
Water lost by transpiration
pure water
rich in solutes
rich in dissolved
rich in dissolved minerals
If a cell gets reduced in size, on placing in a solution of sugar, the solution is
isotonic
hypotonic
hypertonic
both '1' and '2'
The term ' water potential ' was proposed by
Bose
Dixon
Godlewski
Slatyer and Taylor
The equal and opposite pressure to turgor pressure is
wall pressure
suction pressure
osmotic pressure
none of these
A cell becomes turgid when placed in
isotonic solution
hypertonic solution
hypotonic solution
highly concentrated solution
A plasmolysed cell can be deplasmolysed by placing it in
saturated solution
pure water or hypotonic solution