They are capable of .

They-contain chlorophyll and carry out photosynthesiscommonly called algaefour phyla: euglenophytes, chrysophytes, diatoms, dinoflagellates, red/brown/green algaeaccessory pigments help absorb light, give algae a variety of colors

Example- Euglena,-some features-

live in water have flagella for movement use chloroplasts for photosynthesis, but can turn into heterotrophs if they are kept in the dark eyespot used for sensing light and dark pellicle – like a cell wall, helps maintain their shapes