Lessob 24 Flashcards
1
Q
A notochord is….?
A
A flexible rod shaped structure that provides support.
2
Q
A post-anal tail is….?
A
An extension of the body past the anal opening
3
Q
A nerve chord is….?
A
A bundle of nerve fibers that runs down the back of an animal.
4
Q
Animals in phyla chordata have four similar characteristics which…?
A
Only appear during various stages of theory life cycle depending on the animal.
5
Q
Do all vertebrates bear live young?
A
No
6
Q
Are fleshy fish one of the main groups of fish?
A
No
7
Q
Which does not have a vertabrael column?
Shark
Lamprey
Skate
Hagfish
A
Hagfish
8
Q
Is body stability a function of scales on a fish?
A
No
9
Q
Fish exchange gas with the use of their…?
A
Gills
10
Q
The gill covering called the operculum is a structure on …?
A
Bony fish
