Auxin was first isolated by:
Kogl and haagen smit
F.W. Went
Jenson
Harrison
Gibberellic acid has been successfully employed to induce flowering in:
Long day plants under short day conditions
Short day plants under long day conditions
Day neutral plants
All of the above
When the epicotyl elongates and pushes the plumule upwards, such germination is called:
Epigeal germination
Rivpacs germination
Hypogeal germination
All the above
The response of plants to relative day and night length is called:
Grand period of growth
Senescence
Vernalization
Photoperiodism
The time interval from the formative phase to maturation phase is called:
Phase of elongation
Formative phase
Lag phase
Synthetic Auxins are used for:
Killing weeds
Ripening fruits
Increasing the size of fruits
Stimulating growth of cells in tissues
The plant movement due to the internal stimuli are called:
Nastic movements
Autonomic movements
Both a and b
Induced movement
IAA was first isolated from:
Cornil
Gibberella
Rhizopus
Human urine
Seedless fruits can be obtained with the help of which hormone?
IAA
IBA
Ethylene
The condition of a seed when it fails to germinate, even though the environmental conditions are favourable is called:
Seed stratification
Rudimentary seed
Seed dormancy
Quiescent
