Zool Lab 9: Platyhelminthes and Nematoda

Genus Dugesia (whole mount)

Class Turbellaria

Phylum Platyhelminthes

three branched Gastrovascular cavity

triclad

muscular feeding tube leading into the gastrovascular cavity

pahrynx

chemical and tactile receptors

auricles

don't for images but can detect light direction and shadows

eyespots

larva stages within the life cycle of genus clonorchis

cecaria larva and metacarcia larva

Genus Clonorchis

Class Trematoda

Phylum Platyhelminthes

Genus Clonorhcis whole mount

Clonorchis life cycle

Genus Dugesia (cross section)

Class Turbellaria

Phylum Platyhelminthes

lines the gastrovascular cavity

gastrodermis

Is phylum platyhelminths diploblastic or triploblastic

triploblastic

produce spermatozoa

testes

produces ova, spermatozoa fertilizes them

ovary

Glands lining the oviducts that supply nourishment to the eggs

yolk glands

is class turbellaria monoecious or dioecious

monoecious

Genus Taenia

Class Cestoda

Phylum Platyhelminthes

Genus Taenia

Body of tapeworm consist of these two parts, scolex attaches to host, the strobila has a chain of proglottids, or reproductive segments

scolex and stro

what are the three types of proglottids of Class Cestoda?

immature, mature, gravid

is class cestoda monoecious or dioecious

monoecious

Cercarua larvae of trematodes

Sheep liver fluke (fasciola)

what phylum has a body cavity known as a pseudocoel

phylum nematoda

Ascaris vagina

ascaris intestine

Ascaris uterus

Ascaris oviduct/ovary

in a male ascaris the testis become the _____ which is hollow and loops around the hemocoel

vas deferens

in a female ascaris the the vagina opens by the _____ to the outside

genital pore

Ascaris male cross section diagram

what phylum does the genus ascaris belong to

phylum nematoda

male ascaris cross section example

female ascaris cross section diagram

female ascaris cross section example

what phylum does the genus Trichinella belong to

phylum nematoda