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Biology

Vocab[ulary] Chapter 9

TermDefinition
Vertebrate Animal with a backbone
Endoskeleton Skeleton inside of 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, needle-like, structure of a sponge
Cnidarian Invertebrate animal with stinging cells and a hollow centeral cavity
Polyp Cuplike form of a cnidarian
Medusa Umbrella-like form of s cnidarian
Platyhelminth Type of worm with a flattened body
Parasite Organism that gets its food by living on or in another organism.
Nematode Type of worm with a round body
Annnelid Type of worm with a segmented body
Setae Tiny hair-like 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, tongue-like organ of a snail
Echinoderm Spiny-skinned animal
Water-vascular system System of tubes used to transport water
Tube feet Small structures of echindoerms used for movement and feeding
Regeneration Ability to regrow lost parts
Arthropod 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 insects body
Abdomen Third section of an insects 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
Pupa Resting stage during complete metamorphis
Cocoon Protective covering around the pupa
Nymph Young adult-looking insect
Created by: Greg Sixx
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