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63 terms

Invertebrates

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horseshoe crab
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Merostomata
sea spider
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Pycnogonida
jellyfish
Phylum: Cnidaria
Class: Scyphozoa
comb jelly
Phylum: Ctenophora
snail
Phylum: Mollusca
Class: Gastropoda
clam
Phylum: Mollusca
Class: Pelecypoda
scallop
Phylum: Mollusca
Class: Bivalvia (Pelecypoda maybe?)
oyster
Phylum: Mollusca
Class: Pelecypoda
squid
Phylum: Mollusca
Class: Cephalopoda
octopus
Phylum: Mollusca
Class: Cephalopoda
chiton
Phylum: Mollusca
Class: Polyplacophora
flatworm
Phylum: Platyhelminthes
roundworm
Phylum: Nematoda
segmented worm (ringed worm)
Phylum: Annelida
lobster
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
crab
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
shrimp
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
sea urchin
Phylum: Echinodermata
Class: Echinoidea
sand dollar
Phylum: Echinodermata
Class: Echinoidea
starfish (sea star)
Phylum: Echinodermata
Class: Asteroidea
basket star
Phylum: Echinodermata
Class: Ophiuroidea
sea cucumber
Phylum: Echinodermata
Class: Holothuroidea
glass sponge
Phylum: Porifera
Class: Hexactinellida
clonal anemone (aggregating anemone)
Phylum: Cnidaria
Class: Anthozoa
box jellyfish
Phylum: Cnidaria
Class: Cubozoa
man-of-war
Phylum: Cnidaria
Class: Hydrozoa

hydrozoa class = hydroid
sea squirt (tunicate)
Phylum: Chordata
Subphylum: Urochordata
moss animals
Phylum: Bryozoa
porifera
sponges

no nerves or muscles
No true tissues
No organs
No definite symmetry
filter feeders
hermaphrodites
capable of regeneration
cnidaria
jellies, corals, anemones

Radial symmetry
gastrovascular cavity
have circle of tentacles around mouth
has 2 body plans, the medusa and the polyp
have nematocysts or cnidocytes (stinging cells)
can be either sessile or motile (see classes) depending on stage in life cycle
nerve net
muscular system
hydrostatic skeleton
2 tissue layers: Epidermis and Gastrodermis with Mesoglea in between
platyhelmenthes/nematoda/annelida
"worms"
bryozoa
"moss animals"

Otherwise known as moss animals or sea mats
colony forming animals
Lophophores -- ciliated tentacles around mouth
Sessile
mollusca
squid, octopi, clams, snails, slugs
arthropoda/arthropods
shrimp, crabs, lobster, spiders
echinodermata/echinoderms
sea stars, urchins, cucumbers, sand dollars

Meaning spiny skin
radial symmetry
Endoskeleton
Water Vascular System
invertebrates are comprised of
CaCO3
porifera classes
Hexactinellida
Demospongia
Calcarea
cnidaria classes
Anthozoa-- corals, sea anemones
Cubozoa-- Sea wasps, box jellies
Hydrozoa-- hydroids (man-of-war)
Scyphozoa-- jellyfish
ctenophora
name means "comb bearer"
no stinging cells, instead they have adhesive structures called colloblasts
feeding organs
include comb jellies
Radial Symmetry
8 rows of "comb plates"
ctenes
fused rows of cilia
Platyhelmenthes
Flatworms
Most primitive animals with bilateral symmetry
hydrostatic skeleton
Nematoda
Round worms
Move with whip-like motion
Abundant Interstitial Species
hydrostatic skeleton
Annelida
Segmented worms
hydrostatic skeleton
Chaete - bristles (polychaetes)
annelida classes
oligochaeta- earthworms
polychaeta- fanworms
hirudinea- leaches
mollusca classes
Gastropoda--Snails & slugs
Pelecypoda--mussels, clams, oysters
Cephalopoda—squid, octopi
Polyplacophora - Chitons
Brachiopoda
smiley/frowney face shell thing
Lampshells
they are sessile, two-shelled, marine animals with an external morphology resembling pelecypod mollusks
Bilateral symmetry
Attachment structure: attached to the substrate by means of a fleshy "stalk" or pedicle
arthropoda subphylums
1) crustacea
Class Malacostraca— lobsters, crabs, shrimp
2) chelicerata
Class merostomata— horseshoe crabs
Class pycnogonida— sea spiders
class Malacostraca
lobsters, crabs, shrimp
Class merostomata
horseshoe crabs
Class pycnogonida
sea spiders
echinodermata classes
Asteroidia--starfish/sea stars
Echinoidea--sea urchins and sand dollars
Holothuroidea--sea cucumbers
Ophiuroidea--brittle stars and basket stars
Chrinoidea-- feather stars and sea lilies
Chordata subphylum
Urochordata/Tunicates

Body wall covered by leathery tunic
2 siphons
Filter feeder
Nerve chord on larvae
Adult: sessile
Includes sea squirt, sea grape, sea liver, sea pork
fiddler crab
South Carolina state shell
lettered olive
(Oliva Sayana)
barnacle
Phylum: Arthropoda
Subphylum: Crustacea
clam worm
creepy annelid worm thing with palps tentacles
blue crab
whelk
type of sea snail
mollusca
channel whelk
knobbed whelk
conch
type of sea snail
mollusca
difference between conches and welks
conches open up on the left
welks open up on the right
moon snail
predatory snails
like the scary one in the tank
giant Atlantic cockle
lulz