Which of the following endoparasites of humans does show viviparity?
Correct answer: A. Trichinella spiralis
- A. Trichinella spiralis
- B. Ascaris lumbricoides
- C. Taenia
- D. Enterobius vermicularis
Explanation
Trichinella spiralis is a minute nematode parasite that shows viviparity i.e., produces live youngs (larvae) not eggs. The adults of T. spiralis live in the human small intestine, where the females release large numbers of larvae. These larvae bore through the intestine and can cause trichinosis or trichiniasis which has symptoms like diarrohea, nausea, vertigo, pain in limbs and fever etc. Humans get infected after eating imperfectly cooked meat infected with the parasite's larval cysts.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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