Question

Match the following

List - I	List - II
A) Kinetin	IV) Adenine derivatives
B) ABA (Abscisic Acid)	I) Terpenes
C) GA3 (Gibberellic Acid)	I) Terpenes
D) IAA (Indole Acetic Acid)	III) Indole compound

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

Hint:

Plant hormones are categorized by their chemical nature such as adenine, indole, carotenoids, and terpenes.

Answer 1

The Correct Option is C

A) Kinetin → Adenine derivatives (IV)

Kinetin is a type of cytokinin, which is a class of plant hormones that promote cell division. Chemically, cytokinins like kinetin are derivatives of adenine, a purine base found in nucleic acids. This adenine base structure is crucial for its activity in stimulating cell division and growth.

B) ABA (Abscisic Acid) → Terpenes (I)

Abscisic Acid (ABA) is a plant hormone involved primarily in stress responses, such as drought tolerance, and in seed dormancy. ABA is derived from carotenoids, which are terpenoid compounds. Terpenes are a large and diverse class of organic compounds made from isoprene units, and ABA chemically belongs to this group.

C) GA3 (Gibberellic Acid) → Terpenes (I)

Gibberellic Acid (GA3) is a plant growth hormone that promotes stem elongation, seed germination, and flowering. It is a diterpenoid compound, meaning it is synthesized from four isoprene units, placing it in the terpene class. Hence, GA3 is chemically classified as a terpene.

D) IAA (Indole Acetic Acid) → Indole compound (III)

Indole Acetic Acid (IAA) is the most common naturally occurring auxin, a hormone regulating plant growth and development. It contains an indole ring structure, which is a bicyclic structure consisting of a benzene ring fused to a pyrrole ring. This chemical nature classifies IAA as an indole compound.

Summary of Correct Matching:

A) Kinetin → IV) Adenine derivatives

B) ABA → I) Terpenes

C) GA3 → I) Terpenes

D) IAA → III) Indole compound