Question

Match the columns and select the correct option.

	Hormones		Functions
A.	Cytokinin	I.	Senescence
B.	Ethylene	II.	Abscission
C.	Abscisic acid	III.	Cell growth
D.	Auxin	IV.	Shoot and root formation

• A. A-III, B-I, C-II, D-IV
• B. A-I, B-II, C-III, D-IV
• C. A-II, B-I, C-III, D-IV
• D. A-II, B-IV, C-I, D-III

Answer 1

The correct option is A A-III, B-I, C-II, D-IV

Auxin:
• Initiate rooting in stem cuttings
• Promotes flowering
• Prevents early fruit and leaf drop
• Promotes the abscission of mature leaves and fruits
• Induces parthenocarpy
• Used as herbicides to kill dicotyledonous weeds

Cytokinin:
• Produces new leaves, chloroplasts in leaves, lateral shoot growth and adventitious shoot formation
• Helps overcome the apical dominance
• Delays leaf senescence

Ethylene:
• Promotes senescence and abscission of leaves and flowers
• Promotes fruit ripening
• Breaks seed and bud dormancy
• Promotes rapid internode elongation
• Promotes root growth and root hair formation
• Initiates flowering

Abscisic acid:
• Regulates abscission and dormancy
• Acts as plant growth inhibitor
• Inhibits seed germination
• Stimulates the closure of stomata (stress hormone)