Question

Study the Lists and find correct pairs

• A. III, IV
• B. II, III
• C. I, II, III
• D. I, III, IV

Hint:

Terpenes are precursors to gibberellins (GA3), adenine derivatives form cytokinins, carotenoids lead to the formation of abscisic acid (ABA), and purine derivatives are involved in ethylene production.

Answer 1

The Correct Option is B

Analysis of the Pairs

Let's analyze the pairs:

• I. Terpene: Terpenes are precursors to Gibberellic acid (GA₃), which is a plant hormone involved in growth and development.
  Hence, I does not correspond to GA₃.
• II. Adenine derivative: Adenine derivatives are typically associated with Cytokinins (which promote cell division).
  Cytokinins are adenine derivatives, so II correctly matches with Cytokinins.
• III. Carotenoid: Carotenoids are precursors to Abscisic acid (ABA), which is involved in plant stress responses and growth regulation.
  Hence, III corresponds to ABA.
• IV. Purine derivative: Purine derivatives, like Adenine, are associated with the hormone Ethylene, which is involved in fruit ripening and other processes.
  Hence, IV corresponds to Ethylene.

Thus, the correct matching is II (Adenine derivative - Cytokinins) and III (Carotenoid - ABA).

Therefore, the correct answer is (2) II, III.