Which of the following statements about Euglena is correct?

Answer: ASolution: Euglenoids are unicellular flagellate protists commonly found in freshwater ponds, pools and moist mud. Though the euglenoids are photosynthetic in the presence of the light, when deprived of sunlight they behave like heterotophs by predating on smaller organisms (holozoic) or feeding on organic remains (saprobic). Such a mode of nutritions is called mixotrophic. Photosynthetic pigments of euglenoids are identical to those present in higher plants, e.g. chl a and chl b.