Biology Questions and Answers

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Biology Questions and Answers


Worm Diseases



  1. What are worm infections?


Worm infections are human diseases
caused by platyhor nematodes (roundworms).elminthes (flatworms)



  1. What are the most
    important worm infections?


The most important hinfections are schistosomiasiuman worms, taeniasis, (^)
cysticercosis,ancylostomiasi ascariasis (hookworm s and (^) infection).
Other important wby platyhelminthes arorm infections causee: fascioliasis, d
caused by Fasciolaattacks the liver and the bile ducts; hepatica, which (^)
hydatid disease, also known as
echinococcosis,parasite and transmitted by caused by a taefeces ofnia-like
dogs in contact with sheep, with a
clinicalOther important i picture similarnfections cause to cysticercosis.d by
roundworms are: strongyloidiasis, agent
Strongyloides stercoralis,opportunistic disease in AIDS; filariasis, a common (^)
also known as elephantiasis,
transmitted bgenus, caused by Wuchereria bancroftiy mosquitoes of the Culex
and other thread-like worms and
manifesteof lymphatic vessels that cause d by obstruction and fibrosisswelling (^)
(lymphedema) (pinworm infection), causeof limbs; end byterobiasis
Enterobius vermicularis, a worm that
parasitesperianal region; cutaneo the colon and the humanus larva
migrans, an ancylostomiasis of the skin
caused by Ancylostoma braziliensis.



  1. What is schistosomiasis?


Schistosomiasiscaused by schistosomes, is a worm i a species onfection (^) f
flatworms (disease is prplatyhelminthevalent in Latin Amees). Therica (^)
and in the Far East. The main species of
schistosome fSchistosoma mansoni.ound in Latin America is



  1. How do schistosomes
    differentiate regarding sex
    separation?


Schistosomes are species has separated dioecious, i.e., sexes, male andthe (^)
female individuals.



  1. What is the intermediate
    host of Schistosoma mansoni?
    Where does that host live?
    The intermediate host of the
    schistosome is a gsnail of the Planorbidae family anastropod mollusc, ad
    Biomphalaria genus. The snail vector of
    schistosomiasislagoons and creeks. lives in freshwater, as in


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