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Stack #214907

Stack #214907 - Ch. 7 Invertebrates

omnivore animal that eats both plants and animals
radial symmetry arrangement of body parts in a circle, around a center point. In math: rotoational symmetry.
invertebrate an animal without a backbone
carnivore animal that eats only other animals or their remains
bilateral symmetry arrangement of body parts in halves that are nearly mirror images of each other. In math: line symmetry
vertebrate an animal that has a backbone
hermaphrodite an animal that produces both sperm and eggs in the same body
gill an organ that exchanges carbon dioxide for oxygen in the water
open circulatory system blood circulation system in which the heart moves blood out into open spaces around the body's organs
closed circulatory system blood circulation system in which blood moves through the body in a series of closed blood vessels
crop digestive system sac
gizzard muscular digestive system structure where food is ground up
appendage jointed structure such as a leg, pincer or antenna
molting shedding and replacing of an arthropod's exoskeleton
metamorphosis process in which many insect species chand their body form to become adults
epidermis outer most layer of skin
sponges invertebrate animal that is assymetrical
mollusks soft-bodied invertebrates with bilateral symmetry. They usually have one or two shells.
gastropod Largest group of mollusks, with 1 or no shell (univalves).
bivalves mollusks that have a hinged, two-part shell joined by strong muscles.
cephalopods most specialized and complex mollusks. They have a large, well developed head and a closed circulatory system.
segmented worms worms with bilateral symmetry, a body cavity that holds organs, and two body openings
earthworm segmented worms known as annelids, with tube-shaped bodies that are divided into many segments.
marine worms segmented worms called polychaetes, that live in the ocean.
leeches segmented worms that dont' have setae. They feed on the blood of other animals.
arthropods Animals with jointed appendages. They have bilateral symmetry, segmented bodies, an exoskeleton, a body cavity a digestive system with two openings and a nervous system.
insects arthropods with 3 body regions - head, thorax and abdomen
arachnids arthropods with 2 body regions - head-chest region called cephalothorax and an abdomen. they have 4 pairs of legs with no antennae.
centipedes arthropods with long segmented bodies , antennae, simple eyes, and 1 pair of legs per body segment.
millipedes arthropods with long segmented bodies, antennae, simple eyes, and 2 pairs of legs per body segment.
crustaceans arthropods with 1 or 2 pairs of antennae and mandibles (jaws) used for crushing food. They have 5 pairs of legs: 1 pair of claws and 4 pair of legs. Most live in water.
echinoderms invertebrates with a hard endoskeleton covered by thin, bumpy, or spiny epidermis. They have radial symmetry, a mouth, stomach and intestines.
Created by: asarvis