The inner wall of the pollen grain is made up of:

The correct answer is Option (2) → Cellulose and pectin

The wall of a pollen grain has two layers. The hard outer layer is the exine, made of sporopollenin. The inner layer is the intine. It is a thin and continuous layer made up of cellulose and pectin.

(1) Starch and protein — Incorrect. Starch is a stored food, not a wall material. The intine is made of cellulose and pectin.

(2) Cellulose and pectin — Correct. These are the materials of the intine.

(3) Fat and glycogen — Incorrect. Fat and glycogen are stored food, not wall materials. Glycogen is found in animals and fungi, not in plant cell walls.

(4) Protein and glycogen — Incorrect. Neither of these builds 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 – …