Intine is made up of:

The correct answer is Option (3) → Cellulose and pectin

A pollen grain has a two-layered wall. The hard outer layer is the exine. The thin, continuous inner layer is the intine.

(1) Cholesterol and phospholipids — Incorrect. These are lipids of cell membranes. They do not make the pollen wall.

(2) Sporopollenin — Incorrect. This makes the exine, the outer wall. It is one of the most resistant organic materials known. It withstands high temperature, strong acids and alkalis, and no enzyme can break it down.

(3) Cellulose and pectin — Correct. The intine is made of these two substances.

(4) Amino acids and their derivatives — Incorrect. These are not the material of the pollen wall.

Note: A similar question was also asked in CUET (UG) 2026 on 20-05-2026 (Slot 1).

NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …