The separation of components of a mixture based on their differential movement is called
antolysis
plasmolysis
autoradiography
chromatography
Lenticels and hydathodes are small pores with which of the following common attributes ?
they are always remain closed
they allow exchange of gases
their opening and closing is not regulated
they are found on the same organ of plants
To initiate cell plasmolysis, the salt solution should be
isotonic
hypertonic
hypotonic
eletrolysed
Diffusion of dissolved substances through semipermeable membrance is called
dialysis
osmosis
active transport
faciliated diffusion
The internal factor of transpiration is
oxygen
nitrogen
carbon dioxide
sunken stomata
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 phenomenon by which the volume of seed increases by the absorption of water is called
diffusion
imbibition
active absorption
In C3-plants, the first stable product of photosynthesis during the dark reaction is
malic acid
oxaloacetic acid
3-phosphoglyceric acid
phosphoglyceraldehyde
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 term ' water potential ' was proposed by
Bose
Dixon
Godlewski
Slatyer and Taylor