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spirogyra
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spirogyra
spirogyra Spirogyras are filamentous green algae, named for their spiraling chloroplasts.

spirogyra

green algae
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Also known as: Spirogyra, mermaid’s tresses, pond scum, water-silk
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spirogyra, (genus Spirogyra), any member of a genus of some 400 species of free-floating green algae (division Chlorophyta) 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. They can form masses that float near the surface of streams and ponds, buoyed by oxygen bubbles released during photosynthesis. They are commonly used in laboratory demonstrations. Each cell of the filaments features a large central vacuole, within which the nucleus is suspended by fine strands of cytoplasm. The chloroplasts form a spiral around the vacuole ...(100 of 218 words)

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