Question

Write two functions each of auxins, gibberellins, cytokinins and abscisic acid.

Answer 1

Gibberelline:

1. Cell elongation

2. Fruit ripening.

Auxin:

1. Cell division of the meritamatic tissues.

2. Promote cell elongation.

Cytokinin :

1. Helps in leaf senescence.

2. Affect apical dormancy.

ABA:

1. Helps in inhibiting plant's growth.

2. Helps to remain seed dormancy.

Answer 2

Answer:

During phototropism and gravitropism, the plant hormone auxin controls cell elongation. The plant hormone cytokinin promotes cell division, controling many developmental processes in plants.