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Chap. 9 Vocab Terms
Biology Chapter 9 Vocabulary
| Term | Definition |
|---|---|
| Vertebrate | animal with backbone |
| Endoskeleton | skeleton inside the body |
| Invertebrate | animal without a backbone |
| exoskeleton | skeleton on the outside of the body |
| Pores | tiny openings |
| Poriferan | invertebrate animal with pores |
| Spicule | small, hard, needlelike structure of a sponge |
| Cnidarian | invertebrate animal with stinging cells and a hallow central cavity |
| Polyp | cuplike form of a cnidarian |
| Medusa | umbrella-like form of a cnidarian |
| Platyhelminth | type of worm with a flattened body |
| Parasite | organism that gets its food by living on or in the body of another organism |
| Nematode | type of worm with a round body |
| Annelid | Type of worm with a segmented body |
| Setae | tiny, hairlike bristles |
| Closed Circulatory System | organ system in which blood moves through vessels |
| Mollusk | soft-bodied organism |
| Mantle | thin membrane that covers a mollusk's organs |
| Radula | rough, tonguelike organ of a snail |
| Echinoderm | spiny-skinned animal |
| Water-Vascular System | system of tubes used to transport water |
| Tube Feet | small structures of echinoderms used for movement and feeding |
| Regeneration | ability to regrow lost parts |
| Arthropod | animal with an exoskeleton and exoskeleton and jointed legs |
| Chitin | hard material that makes up the exoskeleton of arthropods |
| Open Circulatory System | circulatory system in which blood does not flow constantly through tubes |
| Molting | process by which an animal sheds its outer covering |
| Antenna | structure used for touch, taste, and smell |
| Thorax | middle section of an insect's body |
| Abdomen | third section of an insect's body |
| Spiracle | opening to an air tube of a grasshopper |
| Tympanum | hearing organ in a grasshopper |
| Metamorphosis | series of developmental changes of an organism |
| Larva | immature stage of many animals that usually looks different from the adult form |
| Pupa | resting stage during complete metamorphosis |
| Cocoon | protective covering around the pupa |
| Nymph | young insect that looks like the adult |