The growing region of a root is :
Tip
Below the tip
In between nodes
Lower part of stem
Circadian rhythms are based on approximately a
2- hour period
7-day period
24- hour period
365- day period
Responding to changes in environment in an organism is termed as
Survival
Irritability
Stimulus
None of these
Plants may be made to grow at a faster rate by applying a chemical called
Dichlorophenoxy acetic acid
Trichloropenoxy acetic acid
Gibberellic acid
Phosphon
Dicotyledonous weeds are destroyed by a chemical called:
IAA
2-4 dichlorophenoxy acetic acid
Abscisic acid
Naphthalene acetic acid
Leaves are shed seasonally because they stop producing the growth promoting substance called
Auxin
Cytokinin
G.A
Ethylene
Shedding of leaves and fruits is due to the hormone:
I.A.A
N.A.A
Gibberellins
Growth inhibiting hormones are
Cytokinin and Auxin
Auxin and gibberellin
ABA and ethylene
Indole - 3 - acetic acid
Indole Acetic Acid is
Gibberellin
IAA promotes enlargement of
stem
root
fruit
leaf