A. Naphthalene acetic acid
A.
B. Indole-3-acetic acid
B.
C. Gelatin
C.
D. Zeatin
D.
Correct Answer: D
সঠিক উত্তর: D
Explanation
ব্যাখ্যা
Zeatin is a plant growth hormone in the cytokinin family. It is a purine ring structure with a side chain that contains hydroxyl, amino, and olefin groups.