| A | B |
|---|
| spiny-skilled invertebrates that live on the ocean bottom | echinoderms |
| tongue-like structure gastropods use to scrape food | radula |
| soft-bodied invertebrates that usually have shells | mollusks |
| insects, crustaceans, arachnids, myriapods | arthropods |
| centipedes and millipedes (subphylum) | myriapods |
| chemical that kills unwanted plants and animals | pesticide |
| structures that exchange oxygen and carbon dioxide with water | gills |
| water-filled canals that echinoderms have | water vascular system |
| shedding of the exoskeleton | molting |
| structures echinoderms have that act like strong suction cups | tube feet |
| changes some animals go through to become adults | metamorphosis |
| structures that grow out from the body, like arms and legs | appendages |
| structure earthworms store food | crop |
| makes the shell of a mollusk | mantle |
| bristle-like structures that help earthworms move | setae |
| outer cover that supports and protects arthropods | exoskeleton |
| muscular structure in earthworms that grinds food | gizzard |
| air opening in the abdomen of arthropods | spiracles |
| phylum/class snails and slugs belong | Phylum Mollusca/Class Gastropoda |
| phylum/class clams and oysters belong | Phylum Mollusca/Class Bivalvia |
| phylum/class squid and octopus belongs | Phylum/Class Cephalopoda |
| space between the gut and outer skin | coelom |
| egg, larve, pupa, adult | complete metamorphosis |
| egg, nymph, adult | incomplete metamorphosis |
| phylum starfish belongs | Phylum Echinodermata |
| phylum/class spiders and scorpions belong | Phylum Arthropoda/Class Arachnida |
| phylum/class grasshoppers belong | Phylum Arthropoda/Class Insecta |
| phylum/class crabs belong | Phylum Arthropoda/Class Crustacea |
| phylum earthworms belong | Phylum Annelida |
| phylum leeches belong | Phylum Annelida |
| phylum/class centipedes belong | Phylum Arthropoda/Class Chelipoda |
| phylum/class millipedes belong | Phylum Arthropoda/Class Diplopoda |
| band around earthworm involved in reproduction | clitellum |
| pulls food into mouth of earthworm | pharynx |
| connects pharynx to crop | esophagus |
| earthworm structure that digests and absorbs food | intestine |
| pumps blood through earthworm | 5 "hearts" |
| blood vessel on top side of earthworm | dorsal blood vessel |
| blood vessel on bottom side of earthworm | ventral blood vessel |
| animals that have both male and femal organs | hermaphrodites |
| mollusk structures that take water in and out | siphons |
| anchors and burrows clam | muscular foot |
| mollusk structure that contains gills | mantle cavity |
| cephalopod with external shell | chambered nautilus |
| cephalopod with internal shell | squid |
| cephalopod with no shell | octopus |
| fused head and thorax | cephalothorax |
| crayfish "flipper" | telson |
| posterior region of arthropods | abdomen |
| spider structures that hold food | pedipalps |
| spins spider web | spinneret |
| arthropods with 1 pair legs/body segment | centipedes |
| arthropods with 2 pair legs/ body segment | millipedes |
| anterior regions of insect's body | head |
| middle region of insect's body | thorax |
| arthropods with 3 pairs of walking legs | insects |
| arthropods with 4 pairs of walking legs | arachnids |
| growing back missing parts | regeneration |
| animal without a backbone | invertebrate |
| animal with a backbone | vertebrate |
