Question

name the organism material of which exin and entile of an engiosperm pollen grain are made up explain the role of axine

Answer 1

Exine and intine are formed naturally and are not made of any organisms..

Exine is outer layer and is made of sporopollenin which is tough outer wall of pollen grains

Intine is inner layer is made of cellulose and pectins..

Exine helps in resistance of pollen grains from harsh environment conditions and chemical environment...

Answer 2

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

→ 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 .