Question

The germ pore is the region where the exine is a) thin b) uniform c) thick and uniform d) absent

Answer 1

Answer:

d) Absent.

Explanation:

Germ pore is region where exine is absent which helps in growth of pollen tube through it, towars style of flower.

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 .