Phylum Annelida Flashcards
1
Q
what groups comprise annelida?
A
segmented worms
- earthworms
- leeches
- clamworms
2
Q
characteristics of annelids?
A
- terrestrial and aquatic
- coelomates
- triploblastic
- hydrostatic skeleton
- hermaphrodites
3
Q
scientific name for earthworm
A
oligochaeta
4
Q
scientific name for leech
A
hirudinea
5
Q
scientific name for clamworm
A
polychaeta
6
Q
nervous system of annelids
A
- well developed central nervous system
- ventral nerve cord
- simple brain
7
Q
what are parapodia and chaetae?
A
help with traction during movement (some groups have this, polychaeta)
-lateral extensions (parapodia) with bristles (chaetae)
8
Q
what is the clitellum? (on earthworms)
A
secretes mucous that holds 2 worms together during mating and produces a cocoon
9
Q
what are chaetae?
A
short bristles
10
Q
what are nephridiopores?
A
tiny pores (allow nephridia to excrete nitrogenous waste)
11
Q
what are septa?
A
thin partitions between each segment
