Which of the following is the gaseous hormone?
auxin
ethylene
cytokinin
gibberellin
Ethylene gas is used for
growth of plants .
ripening of fruits
delaying fruit's abscission
stopping the leaf abscission
The length of a plant can be increased by
periblem
dermatogen
apical meristem
lateral meristem
The hormone, which causes stunted growth in pea, is
abscisic acid
The growth of plant is
limited
unlimited
unlocalised
none of these
Movement of touch is called
lithotropism
phototropism
thigmotropism
thermotropism
Which of the following pigment is sensitive to red and far red (infra-red) light?
cytochrome
phytochrome
phyllotaxis
Gibberellin is obtained from
Alternaria solani
Fusarium moliniferum
Gibberella fujikuroi
phytopthora infestans
A pigment, which absorbs red and far-red light is
Carotene
xanthophyII
Removal of seed coat in dormant seeds, by mechanical methods, is called
separation
vernalization
emasculation
scarification
