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Euglena gracilis protozoan algae, light micrograph

Euglena gracilis protozoan algae, light micrograph

C051/2284

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60.2 MB (1.6 MB compressed)

5616 x 3744 pixels

47.5 x 31.8 cm ⏐ 18.7 x 12.5 in (300dpi)

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Credit

FRANK FOX / SCIENCE PHOTO LIBRARY FRANK FOX / SCIENCE PHOTO LIBRARY

Caption

Light micrograph of a group of Euglena gracilis protozoan green algae. Euglena sp. protozoa are commonly found in puddles in such large numbers that they turn the water green. In water poor in organic matter, E. gracilis obtains its nourishment through photosynthesis using its light-sensitive chlorophyll pigments. However, in water rich in organic substances it will lose its pigmentation and feed in an animal-like manner, even if light is present. Euglenoids move by means of flagella, whip-like structures at the ends of their bodies. Magnification: x125 at 35mm size.

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