Question

Exine and intine are the part of
a... Embryo sac
b... Pollen grain c... Stigma d... Seed

Answer 1

Answer:

b pollen grain

Explanation:

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Yours truly

Answer 2

Explanation:

$\tt\pink{\underline{Exine}}$

→ 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 .