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Structure of Microsporangium

Fibrous bands...

Question

Fibrous bands develop in the cells of anther wall layer known as.

A

Epidermis

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B

Endothecium

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C

Middle layers

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D

Tapetum

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Solution

The correct option is C Endothecium
B. Endothecium
The anther in angiosperms consists of four layers epidermis, endothecium, middle layer, and tapetum.
Before dehiscence of the anther, the endothecium develops a fibrous and thickened portion made of callose majorly.

This layer helps in anther dehiscence and pollen grain dispersal.

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Q. Assertion: Endothecium layer of anther wall plays an important role in dehiscence of anther.

Reason: The presence of fibrous bands and differential expansion of inner and outer tangential walls of endothecial cells cause dehiscence of anther.

Q. Which of the following wall layer of anther shows fibrous thickenings of callose?

Q. During the development of anther wall layers, if inner secondary parietal layer differentiates into tapetum and the outer secondary parietal layer divides producing endothecium and middle layer, the development of anther wall layers would confirm to .................

Q. The outermost layer epispope splits to form four bands. These bands separate from the spore wall on drying. These bands are called as

Q. Endothecial cells of anther has fibrous thickenings of .........., lignin and pectin.

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