Studied by 3 peopleplatyhelminthes
bilateral symmetry, flatworms, no body cavity, have pharynx, cephalization
nematoda
bilateral symmetry, cylindrical, complete digestive system, false body cavity, head and tail ends are not distinct from each other
annelida
bilateral symmetry, segmented worms, complete digestive system, body cavity, developed organs, parapodia for locomotion
porifera
no symmetry, sessile, spicules for structure, specialized cells; no tissue or organs, water flows through openings in body
cnidaria
radial symmetry, nematocysts (stinging cells), gastrovascular cavity with one opening, developed muscles and nerves, medusa and polyp
mollusca
bilateral symmetry, soft bodied, most have calcium-carbonate shells, radula, some move by jet propulsion or muscular foot
echinodermata
5-part radial symmetry, spiny skin, endoskeleton of interlocking plates under thin skin, tube feet for movement, exclusively marine
bilateral
can be divided by a plane in their center at one place to form mirror images
radial
can be divided by a plane in many places to form mirror images
asymmetry
no symmetry
endoderm
inner layer, forms the digestive system
mesoderm
middle layer, forms the muscle, circulatory system, excretory, respiratory system
ectoderm
outer layers, nervous system skin (outer coverings)
cephalization
concentration of sensory and nerve cells at one end of an organism
hermaphroditism
having male/female reproductive organs
coelomate
having a coelem
acoelomate
doesn’t have a coelem
pseudocoelomate
pretends to have a coelem
gastrulation
embryo turns into blastula, starting 3 germ layers
hydroskeleton
muscular fluid
which organisms make up phylum porifera
sponges
which organisms make up phylum cnidaria
corals, sea anemones, and jellyfish
which organisms make up phylum platyhelminthes
flatworms
which organisms make up phylum nematoda
roundworms
which organisms make up phylum annelida
segmented worms
which organisms make up phylum arthropoda
insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water
which organisms make up phylum mollusca
clams, snails, slugs, and squid
which organisms make up phylum echinodermata
sea stars, sea urchins, sea cucumbers, brittle stars, and feather stars
which organisms make up phylum chordata
fishes, amphibians, reptiles, birds, and mammals
which phylum is associated with the term/structure: spicules/spongin
porifera
which phylum is associated with the term/structure: nematocysts
cnidaria
which phylum is associated with the term/structure: medusa/polyp
cnidaria
which phylum is associated with the term/structure: tube feet
echinodermata
which phylum is associated with the term/structure: spiny skin
echinodermata
which phylum is associated with the term/structure: radula
mollusca
which phylum is associated with the term/structure: siphon
mollusca
which phylum is associated with the term/structure: pharynx
platyhelminthes
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