Platyhelminthes 2 Flashcards
1
Q
what are the 3 classes of Neodermata?
A
- Cestoda
- Monogenea
- trematoda
2
Q
What are syncytial teguments?
A
- all neodermata classes have this
- Where the epidermis is not divided into individual cells, and is instead a continuous cytoplasmic space
- this is an adaption for absorbing nutrients
3
Q
Which classes of neodermata are endoparasites, and which are ectoparasites
A
Endoparasites: Cestoda, Trematoda
Ectoparasites: Monogenea
4
Q
What is the proglottid?
A
- specific to class cestoda
- body segments, where each proglottis has a complete nervous. excretory and reproductive system.
- an individual has 100’s of these
5
Q
What is the distinguishing feature of class cestoda?
A
- Scolex
- the anterior end, which is used to hold onto the gut
6
Q
Cestoda have _______ intermediate hosts
A
one-several
7
Q
Class monogenea only ever have ….
A
a single host
8
Q
What are the two distinguishing characteristics of class Monogenea
A
- opisthaptor (posterior attachment organ, with hooks and suckers)
- Oncomiracidium larvae (Larvae that are ciliated and have eyes)
9
Q
What are the two classes of Trematoda
A
- Digenea
- Aspidogastrea
10
Q
Digenea have _____ host, while Aspidogastreans have a ____ host.
A
Digenea have multiple intermediate hosts, while Aspidogastreans have a single host.
