LAQ : State the sources and function of gibberellins and cytokinin

Question

State the sources and function of gibberellins and cytokinin. 

Answer

Sources of Gibberellins:

1. Apical meristems of shoot and root tips.
2. Young leaves.
3. Developing seeds and fruits.
4. Embryos.

Functions of Gibberellins:

1. Promotes cell elongation, resulting in the elongation of stems and shoots.
2. Stimulates seed germination by breaking dormancy and promoting the synthesis of hydrolytic enzymes.

Sources of Cytokinins:

1. Root tips.
2. Developing fruits and seeds.
3. Young leaves.
4. Apical meristems.

Functions of Cytokinins:

1. Promotes cell division and differentiation, especially in meristematic tissues.
2. Induces the formation and growth of new shoots from lateral buds.