Annelida Flashcards
Which classes belong to the phylum Annelida?
Oligochaeta, Polychaeta and Hirudinea
Which genus belongs to the Class Oligochaeta?
Lumbricus
What genus belongs to the Class Polychaeta?
Nereis
What genus belongs to the Class Hirudinea?
Hirudo
Another name for the Oligochaeta are
earthworms
Another name for the Polychaeta are
the polychaetes
Another name for the Hirudinea are
leeches
Pertaining to body cavities, Annelida members are
eucoelomates, meaning they have a fluid-filled body cavity
Annelida members have ______ digestive tracts
complete
Annelida members are characterized by their
segmented or metameric bodies that are divided into metameres
Earthworms are di or monoecious?
monoecious
Earthworms move by
peristalsis. contracting and relaxing muscles, causing them to move in a wave
polychaetes are di or monoecious?
dioecious
Do polychaetes have chaetae?
yes
DO earthworms have chaetae?
few on their ventral side
What does each segment on polychaetes have?
paired parapodia
Leeches are di or monoecious?
monoecious
Though most are ectoparasites, some leeches are
free-living predators
Do leeches have chaetae?
no
Leeches have ___ suckers.
2
Which structures are found on Nereis but not on Lubricus?
parapodia, esophageal caecum, and prostomium
Pictured is?
Name the numbered structures.
Lumbricus
- esophageal caecum
- nephridia
- pharynx
- esophagus
- septa
Pictured is?
What two functions does it serve?
Parapodia of Nereis
locomotion and gills
These are examples of
leeches
Pictured is…
Name the numbered structures
the earthworm, Lumbricus
- pharynx
- hearts
- esophagus
- gizzard (crop is located right before)
- intestine
Name the numbered structures.
- Pygidium
- Prostomium
- segments or metameres
- clitellum
Name the numbered structures.
- Palpi
- Prostromium
- Peristomial cirri
- Peristome
- Parapodia
- Setae
- Mouth
- Everted pharynx
