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Science 6 Test 4
Chapters 1-2
| Term | Definition |
|---|---|
| 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
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