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K.M. No Backbones

Vocabulary Key Terms; Chapter 9

TermDefinition
Vertebrate Animal with a backbone.
Endoskelton 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 aniaml with stinging cells and a hollow central cavity.
Polyp Cuplike form of a cnidarian.
Medusa Umbrella-like form of a cnidarian.
Platyhelminth Type of worm with a flatened 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 mullusk's organs.
Radula Rough, toungelike 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.
Athropod Animal with an exoskelton and jointed legs.
Chitin Hard material that makes up the exoskelton of athropods.
Open Circulatory System Circulatory system in which bloods 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 the incects body.
Spiracle Opening to an air tube of a grasshoper.
Tympanum Hearing organ in a grasshopper.
Metamorphisis Series of development changes in a organism.
Larva Immature stage of many animals that usually looks different from the adult form.
Pupa Resting stage during complete metamorphosis.
Cocoon Protective coivering around the pupa.
Nymph Young insect that looks like an adult.
Created by: yololife97
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