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science ch. 12
| Term | Definition |
|---|---|
| bioluminescence | The production of light by living things |
| cnidarian | aquatic invertebrates such as jellyfish and corals |
| coral | type of cnidarian; exist only as polyps and catch plankton with their tentacles |
| coral reef | hard mineral exoskeleton that over time builds up |
| endoskeleton | internal skeleton |
| jellyfish | type of cnidarian; exist in medusa form and prey on zooplankton & eggs and larva of fish |
| medusa | a bell-shaped body form. It is typically able to move. |
| polyp | a tubular body form. It is usually attached to a surface and unable to move. |
| sponge | type of cnidarian; a porous body with many holes in it |
| flatworm | invertebrate in Phylum Platyhelminthes; it has a flat body; parasite |
| roundworm | invertebrates in Phylum Nematoda; it has a round body with a partially filled body cavity; parasite |
| annelid | worms; segmented bodies |
| mollusk | invertebrates; most have shells |
| arthropod | invertebrates in the Phlyum Arthropoda;3 body segments, a hard exoskeleton, & jointed appendages |
| cocoon | silky case spun by larvae of many insects for protection in the pupal stage |
| incomplete metamorphosis | arthropods that don't go through larval stages but rather grow larger until they reach adult size |
| insect | majority of arthropods; have 6 legs & multiple head appendages and sensory organs |
| metamorphosis | changing into the adult form |
| molting | the shedding of the exoskeleton |
| pupa | an insect in its immature form between larva and adult |
| echinoderm | ocean dwelling invertebrates in Phylum Echinodermata |
| lancelet | invertebrate chordates; they retain all 4 defining traits as adults |
| tunicate | invertebrate chordates that lose some of the 4 defining traits by adulthood |