Dab tsi yog cov yam ntxwv ntawm trematode?
Dab tsi yog cov yam ntxwv ntawm trematode?

Video: Dab tsi yog cov yam ntxwv ntawm trematode?

Video: Dab tsi yog cov yam ntxwv ntawm trematode?
Video: Trematodes 2024, Lub rau hli ntuj
Anonim

Trematodes yog lub ntsej muag oval lossis cov tsiaj zoo li cab, feem ntau tsis ntau tshaj li ob peb centimeters hauv qhov ntev, txawm hais tias hom tsiaj me li 1 mm (0.039 in) tau paub. Lawv txawv tshaj plaws sab nraud yam ntxwv yog lub xub ntiag ntawm ob lub nqus, ib qho nyob ze rau ntawm lub qhov ncauj, thiab lwm qhov nyob hauv qab ntawm tus tsiaj.

Ib yam li ntawd, koj yuav nug, trematodes ua dab tsi?

Digenic trematodes yog unsegmented, leaf-shaped worms uas yog flattened dorsoventrally. Lawv dais 2 tus neeg nqus, ib puag ncig lub qhov ncauj (qhov ncauj nqus) thiab lwm tus nyob ntawm lub qhov ncauj ntawm lub cev (lub qhov ncauj nqus). Cov no ua haujlwm raws li cov kabmob hauv nruab nrog cev.

Ib tus kuj tseem yuav nug tau, phylum muaj cov kab mob dab tsi? Kab mob cab

Tom qab ntawd, ua li cas trematodes rov tsim dua?

Sab hauv no mollusc host tus trematode undergoes asexual luam tawm , tsim ntau daim ntawv ntawm tus kab mob thib ob (cercaria) uas yog tsiv mus rau hauv tus tswv tsev thib ob (feem ntau yog amphibian, ntses lossis tsis muaj pob txha) lossis txav ncaj qha mus rau tus tswv tsev uas muaj tseeb (feem ntau yog cov nqaij ntshiv).

Puas yog trematodes hermaphroditic?

Tsuas yog cov ntshav flukes, trematodes yog hermaphroditic , muaj ob qho tib si txiv neej thiab poj niam cev xeeb tub hauv tib tus neeg.

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