Question

Why is spirogyra slimy ?

Answer 1

Spirogyra filaments are usually free, but are sometimes attached at one end to a substratum by a branched and colourless rhizoidal cell or holdfast. These masses are very slimy to the touch, owing to a mucous sheath surrounding the cells, and consist of enormous numbers of long, unbranched, green filaments. There is no' morphological differentiation between the cells of the filament. A delicate sheath of cuticle surrounds the entire filament inside the mucous sheath, while each cell has its own polysaccharide wall, inside which is a peripheral layer of cytoplasm.

Answer 2

spirogyra filament is very slimy due to presence of mucilage sheath that lines the whole filament.


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