What is the size range of Euglenozoa?
Q: What is the size range of Euglenozoa?
A: Most Euglenozoa are around 15-40 µm in size, although some euglenids can get up to 500 µm long.
Q: How do Euglenozoa feed?
A: Some Euglenozoa feed through absorption, and many euglenids have chloroplasts and so get energy by photosynthesis. Others have a cytostome or mouth, used to eat bacteria or other small organisms.
Q: Are there any parasites among the Euglenozoa?
A: Yes, some important parasites of the Euglenozoa phylum infect humans.
Q: What distinguishes the group from other protists?
A: The group is characterized by the ultrastructure of its flagella; each contains a rod (called paraxonemal), which has a tubular structure in one flagellum and a latticed structure in the other.
Q: How do they reproduce?
A: Reproduction occurs only by cell division; during mitosis, the nuclear membrane remains intact and spindle microtubules form inside it.
Q: Where did their chloroplasts come from?
A: Their chloroplasts are surrounded by three membranes and contain chlorophylls A and C, as well as other pigments; they are likely evolved from those of a captured green alga.
