Flashcards in Module 11 Vocabulary Deck (31)
Animals that lack a backbone.
Animals that posses a backbone.
An organism possesses spherical symmetry if it can be cut into two identical halves by any cut that runs through the organism's center.
An organism possesses radial symmetry if it can be cut into two identical halves by any longitudinal cut through its center.
An organism possesses bilateral symmetry if it can only be cut into two identical halves by a single longitudinal cut along its center which divides it into right and left halves.
An outer layer of cells designed to provide protection.
The jellylike substance that seperates the epidermis from the inner cells in a sponge.
Flagellated cells that push water through a sponge.
Cells that move using pseudopods and perform different functions in different animals.
A cluster of cells enclosed in a hard, spicule-reinforced shell.
The sessile, tubular form of a cnidarian with a mouth and tenctacles at one end and a basal disk at the other.
A free-swimming cnidarian with a bell-shaped body and tentacles.
Animal tissue consiting of one or more layers of cells that have only one free surface, because the other surface adheres to a membrane or other substance.
The jellylike substance that separates the epithelial cells in a cnidarian.
Small capsules that contain a toxin which is injected into prey or predators.
Organs that produce sperm.
Organs that produce eggs.
The end of an animal that contains its head.
The end of an animal that contains its tail.
A system designed to transport food and other necessary substances throughout a creature's body.
A system of sensitive cells that respond to stimuli such as sound, touch, and taste.
Masses of nerve cell bodies.
Possesing both male and female reproductive organs.
The ability to regrow a missing part of the body.
A sheath of tissue that encloses the vital organs of a mollusk, makes the mollusk's shell and perfomrs respiration.
A tough, multilayered structure secreted by the mantle, generally used for protection, but sometimes for body support.
A hump that contain a mollusk's heart, digestive and excretiory organs.
A muscular organ that is used for locomotion and takes a variety of forms depending on the animal.
An organ covered with teeth that mollusks use to scrape food into their mouths.