Lab 7 - Annelids and Nematoda Flashcards
Annelida - What are they commonly called?
Segmented Worms (have septa)
Annelida - Are they lophotrochozoa or ecdysozoa?
Lophotrochozoa
Annelida - What kind of symmetry do annelida have?
bilateral
Annelida - They were first to develop ____
Parapodia - paired appendages
Annelida - What is the level of organization?
Organ-system
Annelida - How germ layers do annelida have?
3 germ layers - they are triploblastic
Annelida - What kind of body cavity do they have?
Coelom
Annelida - What kind of digestion do they have?
Complete
Annelida - What kind of circulation do they have?
closed, with multiple hearts
Annelida - How do they respire?
Through their skin, gills, or parapodia
Annelida - What specialized structures do they have for digestion?
pharynx, crop, gizzard
Annelida - What kind of nervous system do they have?
Cerebral ganglia, ventral nerve cord
Annelida - What kind of support system do they have?
Hydrostatic skeleton
Annelida - Do they have a cuticle and do they shed it?
Yes and no they do not shed it
Annelida - How do they locomotion?
Parapodia (some) and setae
Annelida - How do they excrete themselves?
Nephridia
Annelida - What structure secretes a cocoon?
Clitellum
Annelida - What is special about the class polychaeta?
Many, many parapodia, they have no clitellum
Annelida - What is special about the class oligochaeta?
Few setae, their clit is permanent, no parapodia
Annelida - What is special about the class Hirudinea?
no parapodia/setae (no feetsies), anterior and posterior suckers, clit only during reproduction
Nematoda - Are they lophotrochozoa or ecdysozoa?
Ecdysozoa
Nematodes - What is their level of organization?
Organ-system
Nematodes - What is their symmetry?
bilateral
Nematodes - What kind of digestion do they have?
Complete
Nematodes - What kind of circulatory system do they have?
Nada
Nematodes - HOw do they respire?
well they don’t have a system so diffusion
Nematodes - What kind of body cavity do they have?
Pseudocoelom
Nematodes - What kind of support do they have?
Hydrostatic skeleton, only longitudinal muscles, cuticle
Nematodes - What is a cuticle and do nematodes shed it?
A cuticle is a non-cellular, flexible covering of the ectoderm and yes it must be shed
Annelida - What are parapodia and what are setae? How are they related to each other?
Parapodia - paired legs
setae - bristle like extensions that help movement
setae can be found on parapodia
Are annelida and nematoda protostomes or deuterostomes?
Protostomes
Annelida - What segments the worm?
septa
Annelida - What is an animal found in the class polychaeta?
Clam worms
Annelida - What is an animal found in the class oligochaeta?
Earth worm
Annelida - What is an animal in the class hirudinea?
leeches
What is a common name for nematodes?
roundworms
Most nematodes are ____?
parasites
