Vivipary in plants is characteristically found in:
Nerophytes
Hydrophytes
Halophytes
Hygrophytes
Application of gibberellins helps to overcome
Abscission
Apical dominance
Seed dormancy
All of the above
Physiological enigma of the living world is:
Seeds
Fruits
Embryo
Roots
Which hormone is produced by plants during drought condition?
Indole acetic acid
Naphthalene acetic acid
Abscisic acid
Ethylene
Which of the following phytohormones is known as stress hormone?
Auxin
Cytokinins
The increase in girth or thickness of the plants is by a type of growth called:
Primary growth
Secondary growth
Lateral growth
Apical growth
Which of the following shows Richmond Lang effect?
Gibberellin
Kinetin
Sugar
The movement of pollen tube from stigma to micropyle is an example of:
Thigmotropic
Geotropic
Chemotropic
Hydrotropic
The response of plants to relative day and night length is called:
Grand period of growth
Senescence
Vernalization
Photoperiodism
Seedless fruits can be obtained with the help of which hormone?
IAA
IBA
Both a and b