Spirogyra are commonly known as “Pond Silk” because its:
- B Filament are slippery to touch.
- Filament are made up of silk
- Filament makes the pond slippery.
- None of these
Explanation
Spirogyra is called pond silk because it is very slimy and hence slippery to the touch.
It is a freshwater green algae
They are found in shallow ponds, ditches, and lakes.
They are free-floating.
Additional informational:
Spirogyra's two-layered cell walls are composed of pectin on the outside and cellulose on the inside.
The body of the spirogyra has a shiny and silky texture due to the mucilage
that is produced when this pectin dissolves in water. Pond silk gets its name from this.
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