Question

A double layered wall of pollen grain is called....
A) Sporoderm
B) Endothelium
C) Mesocarp
D) Epiderm
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Answer 1

A) Sporoderm is the correct answer.

• Sporoderm or sporodermis is the outer layer of spores and pollens.
• It is divided into two layers namely exine and intine.
• Exine is the outermost part and performs protection of pollen grains from harsh environment.
• It is sclerodermic in nature and is made up of sporopollenin.
• It is also very hard and highly resistant structure known.
• Intine is the inner layer and helps in maturation and germination of pollen grain and pollen tube respectively.

Answer 2

Double wall layer of pollen grain is called Sporoderm.

1) So, the correct option is (A)

2) Pollen grain consists of 2 walls. One is the outer wall called exine and the other inner one is termed as exine.

3) The inner wall which is called the intine is made of a very tough and strong substance called sporopollenin. It is the most toughest and strongest thing found on earth.

4) Pollen grain carries the male gametes which fuses with the egg to form a zygote.

Diagram of pollen grain :

https://brainly.in/question/12877548

Pollen grain structure :

https://brainly.in/question/11623496