Question

What is the full form of IAA?

Hint:

IAA is extensively utilized in agriculture to enhance root development in plant cuttings and to boost fruit production.

Answer 1

Indole-3-Acetic Acid (IAA) is the primary and most prevalent naturally occurring hormone from the auxin family, playing a crucial role in regulating plant growth and development. 
Functions of IAA: 
(i) Cell Elongation: Facilitates cell elongation, especially in shoot growth. 
(ii) Apical Dominance: Maintains the supremacy of the primary shoot over the side branches. 
(iii) Root Growth & Development: Aids in the initiation and development of roots. 
(iv) Tropisms: Critical for phototropism (reaction to light) and gravitropism (reaction to gravity). 
(v) Fruit Development: Encourages fruit development and helps prevent the early dropping of fruit. Produced primarily in the shoot apical meristem and young leaves, IAA is transported downwards through the plant by means of polar transport.