The Crescograph was invented by
Darwin
J.C.Bose
F.W.Went
C.V.Raman
Curling of tendrils is due to
nyctinastic
phototropism
heliotropism
thigmotropism
Which breaks bud dormancy of potato tuber?
Gibberellin
IAA
ABA
Zeatin
The closing and opening of the leaves of Mimosa pudica is due to
thermonastic movement
hydrotropic movement
seismonastic movement
chemonastic movement
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
Proteinaceous pigment which control activities concerned with light
phytochrome
chlorophyll
anthocyanin
carotenoids
The method that renders the seed coat permeable to water so that embryo expansion is not physically retarded, is
vernalization
stratification
denudation
scarification
The wavelength of light absorbed by Pr form of phytochrome is
640 nm
680 nm
720 nm
620 nm
Removal of apical bud results in
formation of new apical bud
elongation of main stem
death of plant
formation of lateral branching
Hormone responsible for senescence is
auxin
GA
cytokinin
