the animal kingdom Flashcards
An animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
vertabrate
any animal that lacks a vertebral column, or backbone,
invertabrate
a person or group who intends to order.
consumer
a group of neuron cell bodies in the peripheral nervous system.
ganglion
stomach or belly
gut
the body cavity in metazoans, located between the intestinal canal and the body wall.
coelom
the property of being divisible into symmetrical halves on either side of a unique plane.
bilateral symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Radial Symmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
Asymmetry
a primitive sedentary aquatic invertebrate with a soft porous body that is typically supported by a framework of fibers or calcareous or glassy spicules.
Sponges
an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates.
Cnidarians
a worm of a phylum which includes the planarians together with the parasitic flukes and tapeworms.
Flatworms
a nematode, especially a parasitic one found in the intestines of mammals.
Roundworms
an invertebrate of a large phylum which includes snails, slugs, mussels, and octopuses.
Mollusks
systems where blood, rather than being sealed tight in arteries and veins, suffuses the body and may be directly open to the environment at places such as the digestive tract.
Open circulatory system
blood is contained inside blood vessels, circulating unidirectionally (in one direction) from the heart around the systemic circulatory route, then returning to the heart again.
closed circulatory system
a segmented worm of the phylum Annelida, such as an earthworm or leech.
Annelid worms
the external skeleton that supports and protects an animal’s body,
Exoskeleton
an eye consisting of an array of numerous small visual units, as found in insects and crustaceans.
Compound eye
a conductor by which electromagnetic waves are sent out or received, consisting commonly of a wire or set of wires
Antenna
the process of transformation from an immature form to an adult form in two or more distinct stages.
Metamorphosis
an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
Endoskeleton
a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.
Water vascular system
