Phylum Platyhelminthes

79 Questions | By OBrienEE | Last updated: Jan 23, 2013 | Total Attempts: 60

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Questions pertaining to parasites in the Phylum Platyhelminthes

Questions and Answers

1.

Common name for Class Trematoda.
2.

Common name for Class Cestoda.
3.

Type of lifecycle trematodes and cestodes have.
4.

Term for having no digestive tract
5.

Class that contains flukes.
6.

What is the host specificity in Class Trematoda?
- A.
  
  Low to moderate in adults; extremely high in larva.
- B.
  
  High in adults; low to moderate in larva
- C.
  
  Extremely high in adults, low to moderate in larva
7.

What are the larval stages in flukes?
- A.
  
  Egg, Miracidium, Sprocyst, Rediae
- B.
  
  Egg, Sporocyst, Cercariea
- C.
  
  Egg, Miracidium, Sporocyst, Rediae, Cercariae, Metacercariae
8.

The eggs of flukes have what on the ends of them?
9.

This is the first larval stage of flukes where the larvae swims around until it finds a snail to ingest it or bore into.
10.

This is the second larval stage of flukes where asexual reproduction occurs.
11.

This is the third larval stage of flukes where it leaves the snail and goes back into the water.
12.

This is the fourth larval stage of flukes where they live freely in the water and can infect the host or go into a secondary host or form a cyst on a plant.
13.

This is the fifth stage larvae of flukes where they encyst on a plant.
14.

What are the general pathologies caused by flukes?
- A.
  
  Nutrient competition and Mechanical Damage from mouth parts.
- B.
  
  Lytic damage by chemical and act as vectors for other diseases.
- C.
  
  Both A and B are correct
15.

How do we control parasites from the Class Trematoda?
16.

How do we diagnose for Trematodes?
17.

Common name for Fasciola hepatica?
18.

What is the scientific name for the Common Liver Fluke?
19.

Where is the adult Fasciola hepatica found?
- A.
  
  Bile duct of herbivores and omnivores
- B.
  
  Bile duct and gall bladder of herbivores and omnivores
- C.
  
  Bile duct and gall bladder of canivores
20.

What is the scientific name of this endoparasite that causes Black Disease?
21.

What parasite does this egg belong to? (Scientific name)
22.

What is the scientific name for the Lancet Fluke?
23.

What is the common name for Dicrocelium dendriticum?
24.

Where are lancet flukes found?
- A.
  
  In the bile duct of herbivores
- B.
  
  In the bile duct of carnivores
- C.
  
  In the bile duct of herbivores and dogs
25.

What is Dicrocelium dendriticum adapted to that Fasciola hepatica is not?