euglenids have phagocytosis for nutrition.
euglenids have phagocytosis for nutrition.
2) what type of nutrition do euglenids have?
phagocytosis
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.









































section::::nutrition.:osmotrophic euglenoids.









































osmotrophic euglenids are euglenids which have undergone osmotrophy.
euglenid
primary studies done in the 1900s by griessmann and skuja had initially grouped diplonemidae (or more specifically, the "diplonema" and "rhynchopus" taxa) with the euglenids. this was due to the two groups sharing many morphological similarities with the euglenids, such as metaboly, locomotion and a microtubule-reinforced feeding apparatus. however, this conclusion was met with some controversy, as diplonemids lacked characteristic features shared by all euglenids, such as possession of pellicle strips and paraxonemal rods on their flagella. instead, they were placed in the euglenozoan phylum and shared this taxon with the kinetoplastids and euglenids. the inclusion of "rhynchopus" and "diplonema" in the family diplonemidae was later confirmed through nuclear 18s rrna analysis. as of now, "rhynchopus" and "diplonema" are part of the ‘classical’ diplonemidae subgroup, whilst "hemistasia" is part of the ‘nonclassical’ diplonemidae subgroup.
diplonemidae