Phylum Annelida - Auxillary information Flashcards
For the Leeches and Oligochaetes, one prominent region of the epidermis in sexually mature individuals is what?
The clittellum
Class Clitellita:
The clitellum produces _______ during _______ and later secretes a _______ where development occurs.
The clittellum produces [mucus] during [copulation] and later secretes a [cocoon] where development occurs.
The first sgement of an annelid is what?
The second?
Prostomium
Peristomium
Segment 14 of an earthworm has what?
Segment 15?
14 - external pores of the oviduct
15 - paired male genital pores
The clitellum is on which segments in earthworms?
32-37
(sub) Class Oligochaeta:
- most feed on _____ and ________ materials, but earthworms ingest _____ to feed on the microfauna and microflora.
Most feed on [dead] and [decaying] materials, but earthworms ingest [soil] to feed on the microflora and microfauna.
In Oligochaetes, what is missing compared to polychaetes?
parapodia
Movement of oligochaetes takes place in ________ ______.
peristaltic waves
Parapodia function in what?
Locomotion
Gas exchange
Repetition of body segments seen in annelids is termed what?
Metamerism
Chaeopterus:
- has specialized parapodia - ____
- typically lives in a ____ covered in ______
- is a sedenterian that lives in _____ substrate
fans
tube, mucus
soft
All species in class branchiobdellida occur only on the body surfaces of ________, where they extract ______ from the host’s ______, or graze ______ from the exoskeleton.
crayfish
blood
gills
diatoms
The colour of a leech could give an indication of what?
What the leech recently ate
Leeches have lost all of their ______, and have a ______ number of body segments.
setae
constant
