Phylum Annelida Flashcards
1
Q
What are examples of Annelida?
A
Earthworms, leeches, polychaetes
2
Q
What gives annelids better control over movement?
A
Segmentation
3
Q
Characteristics:
A
Coelomate
Many coelomic cavities
Has hydrostatic skeleton
4
Q
Locomotion
A
Circular (inside) & longitudinal (outside) muscles responsible for relaxation and contraction for motion
5
Q
Other characteristics
A
- complete digestion
- closed circulatory
6
Q
What limits desiccation?
A
Cuticle
7
Q
Symmetry?
A
Bilateral symmetry
cephalization (not so much for earthworms)
8
Q
Excretory system
A
Metanephridia (primitive kidneys)
9
Q
Reproduction?
A
- Monoecious
- cross fertilization for earthworms and leeches
- dioecious
- broadcast spawn seen in polychaetes
10
Q
Characteristic for annelids
A
-Parapodia
Locomotion
Respiration
-Setae
Locomotion
Defense
Ex: fireworms have bristles that contain venom that pierce skin and cause burning sensation
-Clitellum
Egg capsule
11
Q
Classes discussed
A
- Polychaeta
- Oligochaete
- Hirudinea
