Question

Thickening of cellulose fibres in anther helps in?

Answer 1

Thickening of cellulose fibres in anther helps in dispersal of microspores.

• 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.

Due to its hygroscopic nature, endothecium by thickening the cellulose fibres helps in the dispersal of microspores.

Answer 2

Thickening of cellulose fibers in anther helps in "the dispersal of microspores".

• Anther in angiosperms consists of four layers,i.e. the 'epidermis', 'endothecium', 'middle layer', and 'tapetum'. The 'endothecium' develops a fibrous before the dehiscence of the anther.
• As is typical in plant cells, the cells of the anther are surrounded by a fibrous cell wall, which sustains a high internal cell turgor pressure.
• In an anther, cells of endothecium develop 'fibrous thickening' from the 'inner tangential walls' towards the 'outer wall'. Endothecium helps in the dispersal of microspores due to its hygroscopic nature.

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