Phototropic and geotropic movements are linked to
gibberellins
enzymes
auxins
cytokinins
The response of different organisms to environmental rhythms of light and darkness is called
phototaxis
photoperiodism
phototropism
vernalization
Which of the following gas is a growth regulator?
acetylene
ethylene
benzene
methane
Anthesis is a phenomenon which refers to
reception of pollen by stigma
fomation of pollen
development of anther
opening of flower bud
Movement of auxin is
centripetal
basipetal
acropetal
both (a) and (c)
Which of the following movement is not related to auxin level?
Bending of shoot towards light
Movement of root towards soil
Nyctinastic leaf movements
Movement of sunflower head tracking the sun
What reason will you assign for coconut milk used in tissue culture?
Gibberellins
Cytokinins
Auxins
Ehtylene
Which one increase in the absence of light?
Uptake of minerals
Uptake of water
Elongation of internodes
Ascent of sap
Cell elongation in internodal regions of the green plants takes place due to
indole acetic acid
Tendrils exhibit /twining of tendrils is due to
thigmotropism
seismonasty
heliotropism
diageotropism
