Which plant hormone promotes cell elongation and is involved in phototropism?
Gibberellin
Cytokinin
Abscisic acid
Auxin
Related Questions
I. Antagonist to GA
II. Promoted bud dormancy
III. Promoted stomatal closure
IV. Promoted abscission layer
Identify the hormone/s which promote/s all these events in plants and choose the correct option
Cytokinin
Auxin
Abscisic acid
Which of the following is the effect of a plant hormone, which is synthesized more in the absence of light?
Inhibits the development of seedless fruits
Responsible for closing of stomata
Induces the dormancy of seeds
Length of internodes increases
The discovery of gibberellins is related with one of the following
Blast disease of rice
Rust disease of wheat
Bakane disease of rice
Early blight disease of potato
Apple’s elongation and improvement of its shape is performed by
Auxin
Ethylene
GA
Which plant growth regulator is responsible for triple response?
IAA
IBA
ABA
Photoperiodism was first characterized in
Tobacco
Potato
Tomato
Cotton
The bioassay of auxin is
Avena curvature test
Callus formation
Culture of fungus
Seed dormancy
The shedding of leaves, flowers or fruits due to change in the hormonal balance in plants, is referred as
Senescence
Abscission
Photoperiodism
vernalization
The shedding of leaves, flowers or fruits due to change in the hormonal balance in plants, is referred as
Senescence
Abscission
Photoperiodism
vernalization
Which hormone is primarily responsible for the elongation of internodes and petioles in deep-water rice plants?
Auxin
Gibberellin
Ethylene
Abscisic acid
