Plant Growth Regulators Flashcards
1
Q
Define hormones
A
Hormones are signaling molecules which are produced in small quantities and get transported from the place they are produced to other parts of the organism and trigger responses in target cells
2
Q
Define plant growth regulators
A
Natural/Synthetic organic compounds which modify or control specific physiological processes in plants
3
Q
Auxin functions
A
- Stimulates stem elongation in low concentrations
- Promotes formation of lateral/ adventitious roots
- Promotes vascular differentiation
- Regulates fruit development
- Retards leaf abscission
- Enhances apical dominance
- Functions in phototropism
- Functions in gravitropism
4
Q
Gibberellins functions
A
- Stimulates stem elongation
- Stimulates pollen development
- Stimulates pollen tube growth
- Stimulates fruit growth
- Stimulate seed development and germination
- Regulate sex determination and transition from juvenile to adult phase
5
Q
Cytokinin functions
A
- Regulate cell division in roots and shoots
- Modify apical apical dominance and promote lateral bud growth
- Promote movement of nutrients into sink tissues
- Stimulate seed germination
- Delay leaf senescence
6
Q
Abscisic acid functions
A
- Inhibits growth
- Promotes
