Lab exam #2

Taxonomy

The science of naming and classifying living things.

Binomial Nomenclature

A scientific naming system where each species is given a two-part name comprising the genus and species.

Porifera

A phylum of animals that have no true tissues; commonly known as sponges.

Cnidaria

A phylum of animals that demonstrate radial symmetry, including jellyfish and sea anemones.

Bilateral Symmetry

A body plan in which the left and right sides are mirror images; seen in humans and crawfish.

Eukaryotic

Organisms whose cells contain a nucleus; all members of the animal kingdom are eukaryotic.

Heterotrophic

Organisms that cannot produce their own food and must consume other organisms for energy.

Ectoparasite

An organism that lives on the outside of its host.

Endoparasite

An organism that lives inside its host.

Filter Feeder

An organism that feeds by straining suspended matter and food particles from water.

Exoskeleton

A hard external structure that protects and supports certain animals, such as insects and crustaceans.

Endoskeleton

An internal skeleton made of bone or cartilage in vertebrates.

Radial Symmetry

A body plan in which body parts are arranged around a central axis, found in organisms like jellyfish.

Bivalve

A class of mollusks with a two-part hinged shell, including clams and oysters.

Mammalia

A class of vertebrates characterized by the presence of mammary glands, hair or fur, and a stable body temperature.

Notochord

A flexible rod-shaped structure found in chordates that provides support during embryonic development.

Chondrichthyes

A class of fishes with cartilaginous skeletons, including sharks and rays.

Amphibia

A class of vertebrates that have dual life stages, with aquatic larvae and terrestrial adults.

Reptilia

A class of cold-blooded vertebrates that lay shelled eggs, including snakes and lizards.

Aves

A class of warm-blooded vertebrates characterized by feathers and the ability to fly.

Invertebrates

Animals that do not have a backbone; they make up about 95% of the animal kingdom.

Echinodermata

A phylum of marine invertebrates characterized by radial symmetry and a hard endoskeleton, including starfish and sea urchins.

Deciduous

Trees that lose their leaves seasonally.

Riparian Zone

A corridor of habitat along the banks of a river or stream, supporting diverse plant and animal life.