Question

Group in Auxins

• A. - OH
• B. - COOH
• C. - CO
• D. - O

Hint:

Auxins like indole-3-acetic acid (IAA) contain a carboxyl group (-COOH), which is crucial for their function in plant growth and development.

Answer 1

The Correct Option is B

Auxins are a class of plant hormones essential for the regulation of growth and various developmental processes. The most prevalent auxin is indole-3-acetic acid (IAA). A crucial structural component shared by auxins is the presence of the -COOH group, which is a carboxyl group. This group is key to auxin activity as it is involved in binding to receptors and influencing the hormone's function.

Among the options provided, -COOH is the correct answer, as it is indeed the functional group central to the identity and biological activity of auxins such as IAA.