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.
vertabrates
an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. The invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla.
invertabrates
any organism that can’t make its own food
consumer
a structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.
ganglion
the 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 or absence 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 draw in a current of water to extract nutrients and oxygen.
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. They are distinguished by having a simple flattened body which lacks blood vessels, and a digestive tract which, if present, has a single opening.
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. They have a soft unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
Mollusks
the blood is not enclosed in the blood vessels, but is pumped into a cavity called a hemocoel
Open circulatory system
Image result for Closed circulatory system definition
Blood can flow through vessels inside the body, such as arteries and veins
Closed circulatory system
a segmented worm of the phylum Annelida, such as an earthworm or leech.
Annelid worms
a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
Exoskeleton
an eye consisting of an array of numerous small visual units, as found in insects and crustaceans.
Compound eye
either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods.
Antenna
in an insect or amphibian 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
(in an echinoderm) a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.
Water vascular system
