animal kingdom Flashcards
(24 cards)
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
invertabrates
a person or thing that eats or uses something
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 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
spounges
an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates.
cndarians
They are distinguished by having a simple flattened body that lacks blood vessels, and a digestive tract that, if present, has a single opening
flatworms
a nematode, especially a parasitic one found in the intestines of mammals.
roundworms
They have a soft, unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell
mollousks
Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood
open circulatory system
blood is pumped by a heart through vessels, and does not normally fill body cavities.
closed circulatory system
A large phylum that comprises the segmented worms, which include earthworms, lugworms, ragworms, and leeches
annelid worms
each of the parts into which something is or may be divided.
segment
a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
exoskelton
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
a change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
metomorphis
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
