Zoology Lab Exam 1 - Platyhelminthes ID

BIOL 230 - Spring 2026 - Patyhelminthes

Identify

Phylum: Platyhelminthes

Class: Turbellaria

Dugesia (planaria) live specimen

Identify

Phylum: Platyhelminthes

Class: Turbellaria

Dugesia (planaria) whole mount - close up of eye spots + intestines (?)

Identify

Phylum: Platyhelminthes

Class: Turbellaria

Dugesia (planaria) whole mount - close up of pharynx

Identify

Phylum: Platyhelminthes

Class: Turbellaria

Dugesia (planaria) cross section - note the pharyngeal cavity and two intestines

Identify

Phylum: Platyhelminthes

Class: Turbellaria

Dugesia (planaria) cross section - close up of different cell types

Identify

Phylum: Platyhelminthes

Class: Cestoda

Tapeworm egg

Identify

Phylum: Platyhelminthes

Class: Trematoda

Echinostome fluke - whole mount - note the ventral sucker (?)

Identify

Phylum: Platyhelminthes

Class: Trematoda

Echinostome fluke - whole mount - note the eggs along the side

Identify

Phylum: Platyhelminthes

Class: Trematoda

Clonorchis - human liver fluke - note the oral sucker, ventral sucker, and pharynx, as well as uterus in the middle with eggs

Identify

Phylum: Platyhelminthes

Class: Trematoda

Clonorchis - human liver fluke - note the pale testis and excretory pore

Identify

Phylum: Platyhelminthes

Class: Cestoda

Slide of tapeworm proglottid (gravid?) - note egg shell gland, ovary, uterus, and testes

Identify

Phylum: Platyhelminthes

Class: Cestoda

Slide of tapeworm - scolex - technically its back end and has sharp hooks

Identify

Phylum: Platyhelminthes

Class: Cestoda

Slide of tapeworm - immature proglottid, much smaller than mature or gravid proglottids

Identify

Fish with “black spot”

Each black spot is Phylum: Platyhelminthes

Class;Trematoda

Clinostomum

Identify

Phylum: Platyhelminthes

Class; trematoda

Sheep liver fluke - whole specimen in a jar

Identify

Phylum: Platyhelminthes

Class: Cestoda

Tapeworm - mature, gravid proglottids (black spots)

Identify

Phylum: Platyhelminthes

Class; Trematoda

Scisostoma - note smaller female living in the male’s geyencophoric canal

Identify

Phylum: Platyhelminthes

Class: Cestoda

Tapeworm - cysticerus larva

Identify

Phylum: Platyhelminthes

Class: Cestoda

Tapeworm - note sharp hooks of the scolex

Identify

Phylum: Platyhelminthes

Class: Cestoda

Tapeworm - cysticerus larva in beef muscle

Identify

Phylum: Platyhelminthes

Class: Trematoda

Clam gills with cysts (the dark spots in the red)

Identify

Phylum: Platyhelminthes

Class: Trematoda

Cercariae life stage to leave the snail for the next stage

Identify

Phylum: Platyhelminthes

Class: Trematoda

Rediae life stage - asexual reproduction and feeding inside of the snail

Identify

Phylum: Platyhelminthes

Class: Trematoda

Human live fluke egg

Identify

Phylum: Platyhelminthes

Class: Monogenea

Fish fluke - very strong anterior sucker on one end and ophisthaptor with hooks on the other end