Porifera, Cnidarians, and Platyhelmenthes

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Digestive tract with the entrance being the exit

cnidarians

Muscular "foot" used to slide, jump, or dig

mollusca

Feeding device like a toothed rasping tongue

mollusca

mantle of tissue covering body

mollusca

No locomotion; stationary animal

sponges

No symmetry or consistent body shape

sponges

Specialized cells, but not organized into organs or tissue

sponges

Spicules act as a skeleton to give it structure

sponges

Water flows through its body, full of canals

sponges

All have notochord; some have backbones

Chordates

humans belong to this phylum

Chordates

Complete digestive tract with two ends

annelids

Fluid-filled compartments used for locomotion

annelids

bilateral phylum that added segmentation

annelids

Champions of variations in appearance

arthropods

Exoskeleton made of chitin and protein

arthropods

First phylum to venture into the air

arthropods

More species than any other phylum

arthropods

Pioneered jointed legs

arthropods

Five-part radial symmetry

echinoderms

Hard but flexible bodies

echinoderms

Tube feet

echinoderms

Most members are parasitic

flatworms

Some of the simplest animals with bilateral symmetry

flatworms

increased complexity made possible by much more DNA

Chordates

most have inside skeleton of bones

Chordates

First muscles and nerves

cnidarians

Some free-drifting medusae

cnidarians

Some have stinging structures

cnidarians

Some non-swimming polyps

cnidarians


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