Question

One of the synthetic auxin is

• A. IAA
• B. NAA
• C. IBA
• D. both B and C

Answer 1

Answer: (B)

NAA

Answer 2

NAA (Naphthalene Acetic Acid) is a synthetic plant hormone in the auxinfamily. It is used as an ingredient in many commercial plants rooting horticultural products.

• NAA and 2,4-D (2.4-dichloro phenoxy acetic acid) are both synthetic auxins.
• IAA and IBA (Indole Butyric Acid) are isolated from plants.
• NAA does not occur naturally and is toxic to plants at high concentrations.

Therefore, B) NAA is the correct answer.