<P> The euglenids were first defined by Otto Bütschli in 1884 as the flagellate order Euglenida, as an animal . Botanists subsequently created the algal division Euglenophyta; thus they were classified as both animals and plants, as they share characteristics with both . Conflicts of this nature are exemplary of why the kingdom Protista was adopted . However, they retained their double - placement until the flagellates were split up, and both names are still used to refer to the group . Their chlorophyll are not masked with accessory pigments . </P> <P> The classification of euglenids is still variable, as groups are being revised to conform with their molecular phylogeny . Classifications have fallen in line with the traditional groups based on differences in nutrition and number of flagella; these provide a starting point for considering euglenid diversity . Different characteristics of the euglenids' pellicles can provide insight into their modes of movement and nutrition . </P> <P> As with other Euglenozoa, the primitive mode of nutrition is phagocytosis . Prey such as bacteria and smaller flagellates are ingested through a cytostome, supported by microtubules . These are often packed together to form two or more rods, which function in ingestion, and in Entosiphon form an extendable siphon . Most phagotrophic euglenids have two flagella, one leading and one trailing . The latter is used for gliding along the substrate . In some, such as Peranema, the leading flagellum is rigid and beats only at its tip . </P> <P> Osmotrophic euglenids are euglenids which have undergone osmotrophy . </P>

2) what type of nutrition do euglenids have