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Chapter 9v
Chapter 9 vocab
| Term | Definition |
|---|---|
| Vertebrate | Animal with a 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 |
| Cnidaria | Invertebrate animal with stinging cells an a hollow central cavity |
| Polyp | Cup like 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 systems | 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 Echinodermata used for movement and feeding |
| Regeneration | Ability to regroup lost parts |
| Arthropods | Animal with an 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 development 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 |