Question

in germ pore sporopollenin is absent then exine should also be absent because exine is made up of sporopolleninn

Answer 1

yes it is absent

through germ pore intine form pollen tube

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 .