bio 156 week 7 phylums hemichordata, echinodermata, chordata

Acorn worms

Hemichordata

Sea squirts and tunicates

Phylum chordata, subphylum urochordata

Lungfish

Phylum chordata, osteichthyes bony fishes group, class dipnoi

Class amphibia

Frogs order anura, salamanders order caudata, coecilians order Apoda

Turtles

Phylum chordata subphylum vertebra class reptilia order chelonia

What are people

Phylum Chordata, subphylum tetrapoda, class mammalia- placental bearing therians

3 phylums for deuterostomes

Echinodermata, hemichordata, and Chordata

3 protostome phyla

Annelida, mollusca, anthropoda

Protostome vs deuterostome 4 diff’s

Date of blastopore

Pattern of early cell division

Fate of cells in early embryo

Coelom formation

Becomes mouth vs becomes anus

Spiral vs radial

Determinate vs indeterminate

Determinate is where each cell will have a function and date; indeterminate each cell could become a complete organism

Schizoceoly vs enteroceoly

Schizocoely is where coelom forms from mesoderm. Enteroceoly is where coelom forms from digestive tract

Phylum echinodermata

Symetry? Body plan? System used for mvmt? Marine or f water? Internal skeleton made of?

Bilateral to radial symmetry frim larval to adult, 5 part, water vascular, marine, ossicles

Big diff btw classes of echinodermata phylum

Arrangement of ossicles, grestly reduced in sea cucumbers, fused in sea urchins and sea stars, fused to form a test in sand dollars

Tube feet use in sea stars vs brittle stars

sea stars for locomotion and feeding, brittles stars for feeding only

class of echinoderms with dorsal oral surface

crinoidea

phylum hemichordata found in marine r f water? 2 chordate features? deuterostome or protostome?

marine, hollow nerve chord, pharyngeal gill slits, deuterostome

4 chordate features

dorsal hollow nerve chord, notochord, pharyngeal gill slits, post anal tail

subphylum urochordata chordate traits

tunicates or sea squirts; only gill slits retained in adulthood

subphylum cephalochordata chordate traits

lancelets; all retained in adulthood

vertebrate have verebrae made of

cartialge or bone

in embryonic development of vertebra, what happens

neural arch forms and vertebral body develops around notochord for protection

gnathostomata have what skeleton? fins are what? what kind of scales? what do they lack?

cartilaginous, paired, placoid, swim bladder they lack

why is called lobe finned?

pelvic and pectoral girdles are moving into fins

what orders are amniotes

3 tetrapod orders aves, mamalia, and reptilia

gnathostomata vs osteichthyes vs agnatha

address fins, swim bladder, skeleton, and heart chambers

gnathostomata and osteichthyes have paired fins and a swim bladder

Agnatha lacks paired fins and lacks a swim bladder.

gnathostomata and agnatha have a cartilaginous skeleton while osteichthyes has an ossified skeleton.

all 3 have a 2 chambered heart.

amphibia, reptilia, aves, mammals, and fish diff’s: address heart chambers, endo or ecto, and circulation type

amphibians and reptiles have 3 heart chambers except crocs that have 4.

Amphibians, reptiles, and fish are ectothermic

aves and mammalia have 4 heart chambers and are endothermic

Everthing has 2 circuits, pulmonary and systemic except fish that only have systemic. Fish also have 2 chambered heart

Amphibian vs reptile breathing type

Buccal vs thoracic