Lab 3: Platyhelminthes

Question 1

True or False: Cestodes, like trematodes and monogeneans, have no external motile cilia.

Answer 1

True

Question 2

Name the general cell structures of a tapeworm?

Answer 2

scolex, neck (zone of proliferation), strobila (chain or proglottids), immature mature and gravid proglottids

Question 3

True or False: Tapeworms are monecious/hermaphroditic

Answer 3

True

Question 4

Name the general structures of the mature proglottids.

Answer 4

Question 5

What is the infective and diagnostic stage of taenia pisiformis. What’s the definitive host.

Answer 5

Cysticercus within rabbit, taeniid egg in feces. Dog

Question 6

What does this image represent of Echinococcus granulosus?

Answer 6

Protoscolex

Question 7

What does this image represent for Echinococcus granulosus?

Answer 7

Hydatid cyst

Question 8

Name the general structures of Echinococcus granulosus

Answer 8

Question 9

What is the infective stage diagnostic stage, intermediate host and definitive host of Diplydium caninum?

Answer 9

Cysticercoid, eggs in feces, IH= fleas DH= dogs, humans

Question 10

True or False: In Diplydium caninum gravid proglottids are longer then wider.

Answer 10

True

Question 11

What is the infective stage, diagnostic stage, IH and DH of Monezia expansa?

Answer 11

cysticercoid EGGS IN FECES MITE SHEEP

Question 12

True or False: In monezia, expansa proglottids are wider than long

Answer 12

True