Phylum Chordata Flashcards
0
Q
The earliest fish were
A
- jawless
- dominated Paleozoic era
1
Q
A backbone in vertebrates…
A
- supports body
- protects spinal cord
- attaches to muscles
2
Q
Notochord in chordates
A
- band of stiff connective tissue along back
- strength and support
- few invertebrate chordates
3
Q
Cartilaginous fish
A
- body elements of skeleton reduced
- most of skeleton cartilage
- sharks and rays
4
Q
Bony fish
A
- advanced fish
- very diverse
- includes lung fish
5
Q
Amphibians
A
Rely on water for reproduction and to keep skin moist
Frogs, toads
6
Q
Reptiles
A
- Thick waterproof skin
- terrestrial eggs with hard shells
7
Q
Amniole
A
Have eggs with amniotic sac
