Spirogyra (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus.

Spirogyra, any member of a genus of some 400 species of free-floating green algae found in freshwater environments around the world. Named for their beautiful spiral chloroplasts, spirogyras are filamentous algae that consist of thin unbranched chains of cylindrical cells.

2025年1月19日 · Understanding Spirogyra’s growth, reproduction, and germination stages can shed light on broader biological processes and ecological interactions. Vegetative Growth. During vegetative growth, Spirogyra undergoes cell elongation and division, forming its characteristic filamentous structure.

2024年4月9日 · Spirogyra’s vegetative structure is an unbranched filamentous thallus. Each cylindrical cell of the multicellular thallus is connected end to end. They are 10-100 m wide and can reach lengths of several centimetres.

Spirogyra are free-floating green algae present in freshwater habitats such as ponds, lakes, etc. Spirogyra are commonly known as “water silk or pond silk”. They have a filamentous and unbranched vegetative structure. There are around 400 species of Spirogyra found.

2022年7月22日 · Vegetative Reproduction of Spirogyra. Vegetative reproduction in Spirogyra takes place by means of fragmentation. This is performed by softening of the cross wall between the two adjacent cells, as a result of which each part or piece of the broken filament grows out into a filament by repeated cell divisions, or by the accidental breaking of ...

2022年10月22日 · Spirogyra, a freshwater green algae known as 'water silk,' featuring spiral chloroplasts and multiple pyrenoids. Learn about their structure, reproduction, and role in aquatic ecosystems.

Spirogyra are a threadlike microscopic genus of green alga that are known for their helical shape of chloroplasts. These DNA-resembling algae are found in freshwater environments with over 400 species known in existence today.

2017年3月31日 · Structure of Spirogyra. The vegetative structure or plant body is known as thallus. Thallus is a unbranched multicellular filamentous structure formed by arrangement of cylindrical cells head to head in a single row. Figure: thallus of …

A. Vegetative cycle: During the growing season, the vegetative filament of Spirogyra undergoes fragmentation, so that each fragment independently develops into a new filament by repeated cell division and elongation.