The filament cell develops into a thick-walled structure, under unfavorableconditions, such a cell called akinetes.
Aplanospores is an oval non-motile structure that produces a new plant under favorableconditions
Spirogyra (common names include water silk, mermaid's tresses, and blanket weed)is named as the hair of princess as its filament are silky and smooth in water.
The characteristics of Charophyceae are given below:
1.it is known as green algae.
2.Plant Body is thalloid.
3.cell wall is made of cellulose and pectin.
4.mode of nutrition is photoautotrophic.
examples: Volvox, chlorella, ulva etc
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