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Science 6 Test 4

Chapters 1-2

TermDefinition
three the number of body regions of most crustaceans
cephalothorax identified as the body region when the head and thorax are joined together
ten the number of legs of many crustaceans
gills most crustaceans breathe with these
one a centipede has this number of pair(s) of legs on most body segments.
mouth the pair of legs closest to this part of a centipede's body is always poisonous
millipede this invertebrate defends itself by releasing poison through the stink glands along the sides of its body near its many legs
exoskeleton (external skeleton) worms are not arthropods because they do not have this protective outer covering
castings earthworms enrich the soil with this
setae the stiff bristles on the body of the earthworm
chromosomes the threadlike structures in a cell that determine the characteristics of the organism and how it runs
cell membrane the structure that surround the cell and protects it
cytoplasm the jellylike fluid that fills the cell
nucleus the structure that directs the work of the cell
gastropod uses its foot as if it were sliding on its stomach which allows it to move
bivalves mollusks having two matching shells such as mussels, oysters, clams, and scallops
univalves one shelled mollusks such as the snail
sea star has five or more rays, each with two rows of tube feet
coral polyp an invertebrate that builds a protective limestone cup at the base of its body
pea crab the tiniest crab
cleaner shrimp a shrimp that searches for parasites and other harmful things on a fish
pill bug the wood louse whose nickname is the roly-poly; expels an offensive odor when attacked
hermit crab the crab whose shell covers only the front part of its body
crayfish a small freshwater lobster
spiny lobster the lobster with no pincers
krill the favorite food of some whales
brine shrimp the shrimp that has "gill feet"; often used as aquarium food
pistol shrimp the shrimp with a stun gun
barnacle the crustacean that cements itself to an object when it is young
arachnids scorpion; tarantula
crustaceans barnacle; crab
insects ant; ladybird beetle
mollusks clam; octopus
protozoans amoeba; paramecium
metamorphosis the process of transformation which insects undergo
photosynthesis the chemical process by which a plant produces food
chlorophyll the green pigment that gives a green plant its color
annual a plant that lives for only one season of growth
conifers trees that bear cones instead of flowers
algae some of the smallest green plants
maples a good source of sugar and syrup
oak trees known for producing acorns
birch tree that has smooth, papery bark that peels off in thin layers
pine trees that have needles that grow in bundles
Created by: kibripp