Question

Exine of pollen grains is composed of

• A. Pectocellulose
• B. Lignocellulose
• C. Sporopollenin
• D. Pollen kit

Answer 1

Answer: (C)

Sporopollenin

Most of the pollen grains consists of three distinct parts. The central cytoplasmic part is the source of nuclei responsible for fertilization. The other parts constituting the wall of the grains are an inner layer, the intine, and an outer layer, the exine. the outer and the most durable layer, the exine, is very resistant to disintegration. The constituents of the exine have been termed as the sporopollenin.

So, the correct option is 'Sporopollenin'.