Day 18 Intro to Chordata

Echinodermata Quiz

Chordata

Chordata Characteristics

-Nerve Chord

-Gill slits or pharyngeal gill slits

-Notochord

-Post-anal tail

-Not all Chordates have a backbone. There are two subphyla that are invertebrates

For this class we will only look at the Subphyla Vertebrata

You do not need to know about any of these animals but feel free to look them up if you are curious. These are all chordata animals that do not have a backbone.

Protochordates (Invertebrates)

Subphylum Urochordata

-Class Ascidiacea or Tunicates (Sea Squirts)

-Class Thaliacea (Salps)

Subphylum Cephalochordata

-Lancelets

Intro to Chordata

Watch this brief intro to the phyla chordata

Subphylum: Vertebrata

7 Classes of Vertebrates

Fish

There are 3 classes of fish. They are separated by these three characteristic.

Jawless (Agnatha)

Cartilage Fish (Chondrichthyes

Bone Fish (Osteichthyes)

Amphibians

Have aquatic eggs

Have "two lives" As babies they are aquatic, as adults the live on land

Reptiles

Have land eggs

Birds (Aves)

Have feathers

Mammals

Have mammary glands (Feed their babies milk)

Have fur