Arthropoda
insects belong to this class
Hexapoda
Roly-polys belong to this subdivision of Pancrustacea
Crustacean
sea jellies have this body type for most of their lives
medusa
this structure is used for walking
tube feet
4 structures that allow birds to fly
air sacs, hollow bones, no bladder, interlocking feathers made of keratin
arachnids have special mouth parts called
Chelicerae
all insects have this in common (named for this)
6 legs
Portuguese Man of War and Obelia have this body type for most of their lives
polyp
animals in this subphyla flip their stomach inside out to digest food outside their bodies
Asteroidea
group of animals with hair & mammary glands but no nipples; lay eggs
monotremes
crustaceans have this number of antennae and mouth parts
2
the grabbing/pinching appendage of arachnids
pedipalps
the stinging cells are called
cnidocytes
animals in the subphylum Holothuroidea use this technique to scare away predators
evisceration
the gill like openings present on the necks of chordates at some point in development
pharyngeal slits
arthropods with many many legs belong to which subphyla
myriapoda
this group of arthropods often has wings
hexapods
the interior lining used for digestion
gastrodermis
the fused endoskeleton of sea urchins
test
the invertebrate chordate which becomes immobile as an adult and feeds by filtering H2O through siphons
tunicate
extinct arthropods
Trilobites
the type of metamorphosis with a larval stage
complete metamorphosis
the exterior lining which contains muscle and nerve cells
epidermis
the subphyla containing sea urchins and sand dollars
Echinoidea
the strong and flexible rod in the back of chordates (at some point in their development)