JOHN BURBIDGE / SCIENCE PHOTO LIBRARY JOHN BURBIDGE / SCIENCE PHOTO LIBRARY
Light micrograph of a colony of Volvox sp. Volvox is an organism that lies between the plant & animal kingdom, being classified either with the green algae (plant) or flagellates (animal). The colony contains from hundreds to thousands of cells arranged at the surface of a watery matrix. The individual cells have two flagella & eyespots. They reproduce asexually & sexually. In the former case cells in the rear of the colony divide to form daughter colonies. Once released the parent colony dies. In the latter case male & female gametes are produced & sexual union occurs. Magnification: x960 at 6x4.5cm size.
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