Platyhelminthes and Nemertea

Question 1

Class Turbellaria

Answer 1

Planaria
The corners on the head are called auricles
Anterior end still has a central branch.
The central cut has the pharynx and the lumen of the pharynx.
The posterior end does not have a middle branch
They are monoecious.
The mouth is inside the pharynx.
notice the nerve cords as well

Question 2

Class Trematoda

Answer 2

The flukes
Clonorchis and Fasciola
During the cercaria stage, they have anterior and posterior suckers.

Question 3

Schistosoma mansoni

Answer 3

dioescious, male and female. Female goes into the gynechophoral groove. Snails are the intermediate hosts for these

Question 4

Clonorchis

Answer 4

C. Trematoda

Testes are in the back, along with seminal receptacle, it has pharynx, mouth,

Question 5

C. Cestoda

Answer 5

Ex. Echinococcus granulosus. Dog tapeworm. Intermediate host is sheep and causes gid. They have a scolex

Question 6

Tape worm egg

Answer 6

onchosphere

Question 7

Taenia pisiformis

Answer 7

This one was the slide with the scolex and immature proglottid. We were looking at cysticercue

Question 8

Taenia solium

Answer 8

This parasite infects humans. Eggs hatch after humans eat them. They head to muscles where they encyst. So humans get it from uncooked food.

Question 9

P. Nemertea

Answer 9

Cerebratulus

Important because it has a complete gut