Question

Identify the synthetic auxin from the options given below.

• A. Indole-3-acetic acid
• B. Naphthalene acetic acid
• C. Indole-3-butyric acid
• D. 4-chloroindole-3-acetic acid

Answer 1

The correct option is B Naphthalene acetic acid

Auxins are of two types - natural and synthetic auxins.

Natural auxins are obtained from plants. E.g., indole-3-acetic acid (IAA), indole-3-butyric acid (IBA), 4-chloroindole-3-acetic acid (4-Cl-IAA), etc.

Synthetic auxins are artificially produced compounds that function as auxins. E.g., naphthalene acetic acid (NAA), 2,4-dichlorophenoxy acetic acid (2,4-D), etc.