OSX-2003 Flashcards
1
Q
What is the common name for Alitta virens?
A
rag worm
2
Q
What is the common name for Arenicola marina?
A
lug worm
3
Q
What is the common name for Nephtys hombergii?
A
cat worm
4
Q
What are the 3 parts to the head of a polychaete?
A
Presegmental, prostomium and peristomium
5
Q
What are the three types of feeding?
A
- Short ciliated tube connecting mouth and intestine and sweep small organic particles into pharynx.
- Some organisms secrete digestive enzymes and swallow the dissolved matter
- Some also have an extendable pharynx
6
Q
How are the active prey subdued?
A
By either mucus, toxins or narcotics
7
Q
How does the parapodia differ in active and inactive polychaetes?
A
The active polychaetes have a well developed parapodia, and those that live in burrows have a reduced parapodia
8
Q
What is the latin name for a rag worm?
A
Alitta virens
9
Q
What is the latin name for a lug worm?
A
Arenicola marina
10
Q
What is the latin name for a cat worm?
A
Nephtys hombergii
11
Q
What are the 4 different functions of the parapodia?
A
- Locomotion
- Gas exchange
- Protection
- Creation of water currents
