Term
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Definition
2nd most diverse phylum
head-foot radula
visceral mass
mantle and mantle cavity |
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Term
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Definition
torsion
shell
open circulatory system |
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Term
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Definition
no head or radula
2 shells
hinge ligaments
umbo
abductor muscle
filter feeders
gills, open circulatory system |
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Term
Class Cephalopoda
(squpeids, octopus) |
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Definition
pen-shell structure
closed circulatory system,
Dioecious/spermatophores
chromatophore -pigments
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Term
Phylum annelida
segmented worms |
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Definition
metameres-segmented parts
septa-internal segments
prostomium/pigidium-mouth/anus
cuticle, epidermis, circular muscle, longitudinal muscle
closed circulatory system
complete digestive system
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Term
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Definition
parapodia-segments
setae-cilia-like hairs for traction
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Term
Class Oligochaeta
(earthworms) |
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Definition
lack parapodia, some setae
8 setae per quadrant
clitellum secretes mucus/makes cocoons for eggs/sperm
monoecious |
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Term
Class Hirudinea
(leeches) |
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Definition
no parapodia or setae
predators
clitellum, monoecious |
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Term
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Definition
open circulatory
tagmata
gills, tracheae and spiracles, book gills/book lungs
ocelli, ommatidia |
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Term
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Definition
no antennae
cephalothorax/abdomen
6 pairs of appendages |
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Term
Class Merostamata
(horseshoe crabs) |
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Definition
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Term
Phylum Echinodermata
(sea stars, urchins) |
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Definition
Calcareous endoskeleton
pentaradial symmetry
tube feet(madreporite)
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Term
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Definition
Dermal branchia (gas exchange)
ambulacral groove (tube containing feet)
Oral stomach (underneath) extends to excrete digestive enzymes to kill food
Pyloric stomach (on top)
pyloric secum-digestive glands (p.o.r)
dioecious, external fertilization, pentaradial symmetry |
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Term
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Definition
Madreporite on oral side
all organs by mouth
bursae; bursal sacs for gas exchange
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Term
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Definition
test -well developed endoskeleton
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Term
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Definition
madreporite inside body cavity
respiritory tree connects though anus |
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