Observing God's World Test 4 Flashcards
covering chapters 1-2 (50 cards)
number of body regions of crustaceans
three
name of the body region when the head and thorax are joined together
cephalothorax
number of legs crustaceans have
ten
what crustaceans breathe with
gills
pair(s) of legs a centipede has on most body segments
one pair
which pair of legs is most poisonous on a centipede
the pair of legs closest to the mouth
creature that defends itself by releasing poison through the stink glands along the side of its body
millipede
the stiff bristles on the body of an earthworm
setae
the protective outer covering of arthropods
exoskeleton
valuable for enrichment of the soil
earthworm’s castings
threadlike structures in a cell that determine the characteristics of the organism and how it runs
chromosomes
the structure that surrounds the cell and protects it
cell membrane
the jellylike fluid that fills the cell
cytoplasm
the structure that directs the work of the cell
nucleus
uses its foot to move as if it were sliding on its stomach
gastropod
mollusks having two matching shells
bivalves
one-shelled mollusks
univalves
it has five or more rays, each with two rows of tube feet
sea star
an invertebrate that builds a protective limestone cup at the base of its body
coral polyp
the tiniest crab
pea crab
a shrimp that searches for parasites and other harmful things on a fish
cleaner shrimp
the wood louse whose nickname is the roly-poly; expels an offensive odor when attacked
pill bug
the crab whose shell covers only the front part of its body
hermit crab
a small, freshwater lobster
crayfish
