DIVERSITY ANIMALS NOTEBOOK NOTE

Flashcards covering key vocabulary related to animal diversity and classification.

Heterotrophic

Organisms that obtain their food by consuming other organisms.

Multicellular Eukaryotes

Organisms composed of multiple cells that contain a nucleus and organelles.

Body Symmetry

The way an organism's body is organized, including bilateral symmetry (divided into two equal halves) and radial symmetry (symmetrical around a central axis).

Coelom

A fluid-filled body cavity that houses organs.

Acoelomates

Organisms that lack a body cavity, with flattened bodies (e.g., nematodes).

Coelomates

Organisms that have a coelom, forming a body cavity.

Phyla Porifera

Simple aquatic animals with a porous body structure, usually sessile and hermaphroditic.

Phyla Cnidaria

Radially symmetrical animals with tentacles that have stinging cells.

Deuterostomes

A group of animals in which the anus develops from the blastopore during embryonic development.

Echinodermata

A phylum of marine animals with radical symmetry and a spiny exoskeleton, such as starfish.

Chordata

A taxonomic group that includes animals with a backbone or notochord.

Notochord

A flexible rod that provides support in chordates.

Taxonomic Classes of Chordates

The seven classes include Agnatha (jawless fish), Chondrichthyes (cartilaginous fish), Osteichthyes (bony fish), Amphibia (amphibians), Reptilia (reptiles), Aves (birds), and Mammalia (mammals).

Agnatha

Jawless fish, such as hagfish.

Chondrichthyes

Cartilaginous fish, such as sharks.

Osteichthyes

Bony fish, such as salmon.

Amphibia

Cold-blooded vertebrates that live both in water and on land, such as frogs.

Reptilia

Cold-blooded vertebrates with scaly skin, such as snakes.

Aves

Warm-blooded vertebrates with feathers and wings, such as pigeons.

Mammalia

Warm-blooded vertebrates that produce milk, such as humans.