Which one of the following is an anti gibberellin?
Ethylene
Kinetin
Abscisic acid
Zeatin
Which hormone delays senescence?
Cytokinins
Gibberellins
Which of the following shows Richmond Lang effect?
Auxin
Gibberellin
Sugar
Who proposed the term 'cytokinins'?
F.W. Went
Letham
J.C.Bose
Smit
The visible reaction of a plant produced as result of applied stimulus is called:
Response
Movement
Stimuli
Impulse
In which phase the rate of growth reaches its maximum value?
Lag phase
Stationary phase
Exponential phase
All phases
A seed which is unable to germinate due to unfavourable environmental conditions is called:
Dormant seed
Quiescent seed
Natural seed
Rudimentary seed
Which hormone is produced by plants during drought condition?
Indole acetic acid
Naphthalene acetic acid
Senescence occurring due to the competition for metabolites between young and older leaves is called:
Simultaneous senescence
Sequential senescence
Whole plant senescence
Organ senescence
Which of the following phytohormones is known as stress hormone?
