animal
many-celled organism that cannot make its own food but eats other organisms
animal symmetry
how all the body parts are arranged in an animal
radial symmetry
body parts are arranged in a circle around a central point
bilateral symmetry
body parts are arranged on both halves of an animal in the same way
asymmetry
no definite shape or pattern to the body parts of an animal
invertebrate
animal without a backbone
vertebrate
animal with a backbone
sponges
the simplest animals
regeneration
ability of an organism to replace body partrs
budding
reproduction in which a new organism grows off the side of a parent
cnidarians
invertebrate that uses stinging cells to capture food and defend itself
tentacle
arm-like structure that surrounds the mouths of some organisms and helps them capture food or defend themselves
mollusk
invertebrate with a soft, unsegmented body
mantle
thin layer of tissue that covers the soft body of a mollusk
worms
animals with tube-like soft bodies without feet
flatworm
worm with flat body and and only one body opening
parasite
organism that lives in or on another organism and causes them harm
roundworm
worm with round body and two body openings
segmented worm
worm with body that is divided into sections by circular rings
setae
bristle-like structures on each segment of a worm
echinoderms
invertebrate with an internal skeleton and a water vascular system
arthropods
invertebrate that has an external skeleton, a segmented body, and jointed legs
spiracle
opening in the abdomen of an arthropod through which air enters
exoskeleton
waxy, waterproof outer shell that protects an animal
crustaceans
arthropods that have two or three body sections, five or more pairs of legs, and two pairs of antennae
antennae
body parts attached to an animal's head that contains sense organs
arachnids
arthropods with two body sections, eight legs and no antennae
insects
arthropods with three body sections, six legs, one pair of antennae and usually one or two pairs of wings
metamorphosis
series of changes in an animal's life
endoskeleton
skeleton inside an insect's body
animal
many-celled organism that cannot make its own food but eats other organisms
animal symmetry
how all the body parts are arranged in an animal
radial symmetry
body parts are arranged in a circle around a central point
bilateral symmetry
body parts are arranged on both halves of an animal in the same way
asymmetry
no definite shape or pattern to the body parts of an animal
invertebrate
animal without a backbone
vertebrate
animal with a backbone
sponges
the simplest animals
regeneration
ability of an organism to replace body partrs
budding
reproduction in which a new organism grows off the side of a parent
cnidarians
invertebrate that uses stinging cells to capture food and defend itself
tentacle
arm-like structure that surrounds the mouths of some organisms and helps them capture food or defend themselves
mollusk
invertebrate with a soft, unsegmented body
mantle
thin layer of tissue that covers the soft body of a mollusk
worms
animals with tube-like soft bodies without feet
flatworm
worm with flat body and and only one body opening
parasite
organism that lives in or on another organism and causes them harm
roundworm
worm with round body and two body openings
segmented worm
worm with body that is divided into sections by circular rings
setae
bristle-like structures on each segment of a worm
echinoderms
invertebrate with an internal skeleton and a water vascular system
arthropods
invertebrate that has an external skeleton, a segmented body, and jointed legs
spiracle
opening in the abdomen of an arthropod through which air enters
exoskeleton
waxy, waterproof outer shell that protects an animal
crustaceans
arthropods that have two or three body sections, five or more pairs of legs, and two pairs of antennae
antennae
body parts attached to an animal's head that contains sense organs
arachnids
arthropods with two body sections, eight legs and no antennae
insects
arthropods with three body sections, six legs, one pair of antennae and usually one or two pairs of wings
metamorphosis
series of changes in an animal's life
endoskeleton
skeleton inside an insect's body