Invertebrate Animal Vocabulary Flashcards
Vertebrates
Vertebrates comprise all species of animals within the subphylum Vertebrata.
Invertebrates
Invertebrates are animals that neither possess nor develop a vertebral column, derived from the notochord.
Consumer
A consumer is a person or organization that uses economic services or commodities.
Ganglion
a structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.
Gut
the stomach or belly.
Coelom
the body cavity in metazoans, located between the intestinal canal and the body wall.
Bilateral Symmetry
the property of being divisible into symmetrical halves on either side of a unique plane.
Radial Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Asymmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
Sponges
Sponges, the members of the phylum Porifera, are a basal Metazoa clade as sister of the Diploblasts.
Cnidarians
an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates.
Flatworms
The flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
Roundworms
The nematodes or roundworms constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a broad range of environments.
Mollusks
Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusks
Open circulatory system
Open circulatory systems (evolved in crustaceans, insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells.
Closed circulatory system
Vertebrates, and a few invertebrates, have a closed circulatory system.
Annelid worms
Annelid. The annelids also known as the ringed worms or segmented worms, are a large phylum, with over 17,000 extant species including ragworms, earthworms, and leeches.
Exoskeleton
a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
Compound eye
an eye consisting of an array of numerous small visual units, as found in insects and crustaceans.
Antenna
either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods.
Metamorphosis
a change of the form or nature of a thing or person into a completely different one, by natural or supernatural means
Endoskeleton
an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
Water vascular system
a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.
