Plant Hormones
Trending Questions
What are phytohormones? Give examples.
Which hormone is not a growth inhibitor - IAA or Abscisic acid?
- Help in retention of chlorophyll
- Promote formation of abscission layer
- Inhibit cytoplasmic movement
- Influence water transport
P is present in developing fruits and seeds and it promotes cell division. Y is responsible for wilting of leaves as it inhibits growth.
Identify P and Y.
P - Auxin, Y - Gibberellin
P - Gibberellin, Y - Cytokinin
P - Abscisic acid, Y - Cytokinin
P - Cytokinin, Y - Abscisic acid
Which one of the following pair is correctly matched?
Gibberellin – internodal elongation
Cytokinin – fruit ripening
Ethylene – apical dominance
- (b) and (c) above.
Which hormone is only plant hormone present in gaseous form.
What is tropism?
Name one gaseous plant hormone.
- Endocrine Hormones
- Photohormones
- Phytohormones
- Cytohormones
Give the reason why iodised salt is recommended in diet.
A growth inhibitor found in plants.
- Reflex arc
- Circulation
- Locomotion
- Reflex action
- Dendrite → axon → axonal end → cell body
- Dendrite → cell body → axon → axonal end
- Axonal end → axon → cell body → dendrite
- Cell body → dendrite → axon → axonal end
What are phytohormones?
Which of the following is a gaseous plant hormone?
Auxin
Cytokinin
Ethylene
None of these
- Spinal cord
- Motor neuron
- Effector muscle
- Sensory neuron
- Movement
- Motion
- Locomotion
- Legs
A) Secondary growth means increase in length of the plant
B) Secondary growth is brought by intercalary meristem
C) Secondary growth gives rise to branches of the shoots
D) Secondary growth results in the increase in the thickness of stem
- Movement
- Motion
- Locomotion
- Legs
