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Volvox colony, light microscopy

K005/4082

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Credit

WIM VAN EGMOND / SCIENCE PHOTO LIBRARY WIM VAN EGMOND / SCIENCE PHOTO LIBRARY

Caption

Volvox colony. Microscope footage part of a Volvox sp. colony. Volvox are small freshwater colonial unicellular green algae that usually make up a larger spherical colony, which behaves like a multicellular organism. Individual cells are connected to each other via protoplasmic strands, and embedded in a globe of glycoprotein. Each cell has two hair-like flagella, seen here, that protrude outwards and are used for colony locomotion. Daughter colonies (green sphere) are produced asexually inside the parent colony, which disintegrates to release them when they are mature. Colonies also reproduce sexually, in which case male and female gametes are produced and a sexual union occurs.

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  • Duration: 00:00:39.24
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