Question

exine of pollen grains are
composed of ?​

Answer 1

Answer:

layers, the intine and the exine. The intine, or inner layer, consists primarily of cellulose and pectins. The exine, or outer layer, is composed of a highly decay-resistant chemical called sporopollenin. The exine usually has one or more thin areas, or pores, through which the pollen tubes germinate, and the…

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Answer 2

Answer:

Exine of pollen grain is composed of sporopollenin.