CBSE
Root development is promoted by
abscisic acid
auxin
gibberellin
gibberellin
Stroma in the chloroplasts of higher plants contains
light -independent reaction enzymes
Light -dependent reaction enzymes
ribosomes
ribosomes
The technical term used for the androecium in a flower of China rose (Hibiscus rosa siensis( is
monadelphous
diadelphous
polyandrous
polyandrous
A drupe develop in
Wheat
pea
tomato
tomato
Typical growth curve in plants is
sigmoid
linear
stair-steps shaped
stair-steps shaped
One of the commonly used plant growth hormone in tea plantations is
ethylene
abscisic acid
Zeatin
Zeatin
Typical growth curve in plants is
sigmoid
linear
Stair-steps shaped
Stair-steps shaped
In which one of the following, the male and female gametophytes don't have free -living independent existence ?
Pteris
Funaria
Polytrichum
Polytrichum
Phototropic curvature is the result of uneven distribution of
gibberellin
phytochrome
cytokinins
cytokinins
One of the synthetic auxins is
NAA
IAA
GA
GA