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Stack #18666

chapter 10 vocab

mollusk An invetebrate with a soft, unsegmented body; most are protected by a hard outer shell.
open circulatory system a circulatory system in which the heart pumps blood into open spaces in the body, and blood is not confined to vessels
gastropod a mollusk with a single shell or no shell
herbivore a consumer that eats only plants
carnivore a consumer that eats only meat
radula a flexible ribbon of tiny teeth in mollusks
bivalve a mollusk that has 2 shells held together by hinges and stong muscles
omnivore a consumer that eats both plants and animals
cephalopod an ocean- dwelling mollusk whose foot is adapted as tentacles that surround its mouth
arthropod an invertebrate that has an external skeleton, a segmented body, and jointed appendages
exoskeleton a waxy, waterproof outershell or outer skeleton that protects the animal and helps prevent evaporation of water
molting the process of shedding an outgrown exoskeleton
antenna an appendages on the head of an arthropod that contains sense organs
crustacean an arthropod that has two or three body sections, five or more legs and two pairs of antennae.
metamorphosis a process in which an animal's body undergoes dramatic changes in form during its life cycle
arachnid an arthropod with two body sections, four pairs of legs, and no antennae
abdomen the hind section of an arthropod
insect an arthropod with three body sections, six legs, one pair of antennae, and usually one or two pairs of wings
thorax an arthropod's mid- section, to which its wings and legs are attached
complete metamorphosis a type of metamorphosis characterized by four dramatically different stages
pupa the third stage of complete metamorphosis, in which an insect changes from larva to an adult
gradual metamorphosis a type of metamorphosis in which an egg hatches into a nymph that remembles an adult, and which has no distinct larval stage
nymph a stage of gradual metamorphosis that usually remsembles the adult insect
food chain a series of events in which one organism eats another and obtains energy
ecology the study of how organisms interact with their environment
producer an organism that can make its own food
consumer an organism that obtains energy by feeding on other organisms
decomposer an organism that breaks down chemicals from wastes and dead organisms, and returns important materials to the soil and water
pollinator an animal that carries pollen from one plant to another of the same species, enabling plants to reproduce
pesticide a chemical designed to kill a pest animal
biological control a natural predator or disease used to combat a pest insect
echinoderm a radially symmetrical invertebrate that lives on the ocean floor and has an internal skeleton and water vascular system
endoskeleton an internal skeleton
water vascular system a system of fluid- filled tubes in an echinoderm's body
tube feet extensions of an echnoderm's water vascular system that stick out from the body and function in movement and obtaining food
Created by: lizg.