The exine of pollen grains is made up of ______ .
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Sporopollenin
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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Explanation:
→ It age outer layer of pollen grain and very hard.
→ It age made up of sporopollenin in which is most resistance organic material present in nature .
→Sporopollenin is Resistance to high temperatures stronger acids and alkaline and also to enzyme .
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