Green euglena has chloroplasts, which can synthesize organic matter through photosynthesis, and most euglena can survive through substances dissolved in water, which means that most euglena can survive in two ways.

A few euglena only survive through photosynthesis, that is, autotrophs, or only through water-soluble substances, that is, heterotrophs.

Eupolyphaga organisms are usually facultative mixed nutrients, and the quality requirements for them are relatively loose. If both are of high quality, the growth speed of organisms can exceed the maximum speed when only one side is used. Note that some Eupolyphaga are autotrophic, some are heterotrophic, and the rest are facultative.

Habitat and morphology of euglena;

Living in ditches, ponds or slow streams rich in organic matter, but also found in riverbanks, wet soil in bays or saline marshes. In addition, plant fragments and small crustaceans can also be seen on other algae. As for organic species, most of them exist in sewer water, which can multiply in large quantities in warm seasons and often turn the water green.

Body green, spindle-shaped, about 60 cm long, blunt and round at the front end and sharp at the back end. The worm has a big round core in the middle, which is transparent when it is alive, and its body surface is covered with an elastic twill surface film.