Question

Exine of pollen grains is composed of [MHCET 2003; AIIMS 2003; MP PMT 2005]
A) Pectocellulose B) Lignocellulose C) Sporopollenine D) Pollen kit

Answer 1

Exine of pollen grain is made up lignocellulose

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 .