ECHINODERMATA & CHORDATA

What are the distinguishing characteristics of Echinodermata?

Water vascular system, spiny skin

What symmetry are Echinodermata?

Radial

Phylum and Class

Echinodermata; Holothuroidea (sea pickle)

Phylum and Class

Echinodermata; Crinoidea (sea lilies)

Phylum and Class

Echinodermata; Echinoidea (sea urchins, sand dollars)

Phylum and Class

Echinodermata; Ophiuroidea (brittle stars)

Phylum and Class

Echinodermata; Asteroidea (starfish)

Label

What are the distinguishing characteristics of Chordata?

Notochord, Hollow nerve cord, Muscular post-anal tail, pharyngeal slits

What are the subphylums of Chordata?

Urochordata, Cephalochordata, Vertebrata

Subphylum

Urochordata (sea squirt)

Subphylum

Cephalochordata (lancelets)

Subphylum and Class

Vertebrata, Myxini (hagfish)

Subphylum and Class

Hyperoartia, Vertebrata (lampreys)

Subphylum and Class

Chondrichthyes, Vertebrata (sharks and rays)

Subphylum and Class

Osteichtyes, Vertebrata (bony fish)

What is the operculum and caudal fin?

gill cover and tail

Subphylum and Class

Amphibia, Vertebrata (frogs and toads, salamanders)

Why are amphibians restricted to wet environments?

exterior reproduction (swim to eggs), skin needs to be moist to breathe, aquatic larval stage

Subphylum and Class

Reptilia, Vertebrata

How are reptiles adapted for land?

eggs with hard shells, dry scaly skin (breath with lungs)

Subphylum and Class

Aves, Vertebrata

How are aves adapted for flight?

hollow bones (flexibility), shrinking gonads in off season, feathers, wings

Subphylum and Class

Mammalia, Vertebrata