58.1 MB (4.3 MB compressed)
4076 x 4978 pixels
34.5 x 42.2 cm ⏐ 13.6 x 16.6 in (300dpi)
HERMAN EISENBEISS / SCIENCE PHOTO LIBRARY HERMAN EISENBEISS / SCIENCE PHOTO LIBRARY
Volvox (Volvox sp.) is found in ponds and ditches. Up to 1000 single-celled green algae, each one with a tiny pair of whip-like tails, are linked together to form a hollow sphere. Inside this sphere you can see smaller daugther-colonies, which eventually come free when the original colony disintegrates. Volvox is more like a multicellular organism than a colony of single cells. It displays already the two essential features of a multicellular organism: the cells become specialised and they cooperate. Magnification: 60x at 5'x7'.
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