Search results
Results From The WOW.Com Content Network
Consensus life cycle of free-living protists, including sexual reproduction (red arrows), asexual reproduction (green arrows), colonial stages (blue), and formation of cysts. Each protist group has a different sexual cycle (light purple) as well as different means of exiting the colonial stage. [147]
A trophozoite (G. trope, nourishment + zoon, animal) is the activated, feeding stage in the life cycle of certain protozoa such as malaria-causing Plasmodium falciparum and those of the Giardia group. [1] The complementary form of the trophozoite state is the thick-walled cyst form. They are often different from the cyst stage, which is a ...
Blastocystis hominis has a multistage life cycle and is highly adaptable to a variety of host environments. [15] The illness develops when the cyst form is consumed by contaminated food or water. [16] When the cyst enters the colon, it grows into a vacuolar form, which is the key diagnostic stage usually seen in stool samples. [17]
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the ...
Protistology is a scientific discipline devoted to the study of protists, a highly diverse group of eukaryotic organisms. All eukaryotes apart from animals, plants and fungi are considered protists. [1]
Thus, the protist exhibits an unusual life cycle of alternating autotrophy and heterotrophy. [5] Genetic sequencing (of 18S rRNA gene) revealed that the protist can harbour at least three distinct strains of Nephroselmis rotunda. [6] The generic name is from a Japanese interjection roughly meaning "enigmatic" [1] or "unusual". [5]
Spirostomum is a genus of ciliated protists in the class Heterotrichea.It is known for being very contractile. [5] Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.
Protoopalina pingi [1] from the recta of the frogs Sylvirana guentheri and Pelophylax nigromaculatus. Like many parasites, the life cycle of opalines is rather complex .The most comprehensive study published so far concluded that the life cycles of 10 Opalina species, 1 Zelleriella species and 1 Protoopalina species are all "remarkably similar" (p. 321). [8]