Body plan of euglena Animation

Euglenoids are single-celled organisms that live in lakes and ponds. A contractile vacuole pumps out the water that diffuses into the cell from its hypotonic surroundings. The body is covered by a translucent pellicle composed of flexible strips of a protein-rich material. Light passes through the pellicle and is captured by chloroplasts. Like algae and plants, Euglena can manufacture its own food through photosynthesis. An eyespot gives the cell the capacity to detect variation in light levels, and the long flagellum propels it to the areas most suitable for photosynthesis.

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