Unit 5 Lecture: The Green Mile Flashcards
What is a notochord?
A dorsal rod that is firm and flexible which supports the body of organisms from the phylum chordata
Describe the “dorsal nerve cord” in terms of organisms from the phylum Chordata
It is a hollow, single cord
Describe pharyngeal slits in terms of organisms from the phylum Chordata
Pharyngeal slits were gills at some time
Describe the “post anal tail” in terms of organisms from the phylum Chordata
The post anal tail, at some piont, was muscular
What are the three classes of fish?
Class Agnatha
Class Chondrichthyes
Class Osteichthyes
Lampreys belong to what class and phylum?
Class Agnatha
PHyum Chordata
Hagfish belong to what class and phylum?
Class Agnatha
PHylum Chordata
What are three characteristics of organisms from the class agnatha?
Jawless
No paired fins or scales
Sharks belong to what class and phylum?
Class Chondrichthyes
PHylum Chordata
Skates belong to what class and phylum?
Class Chondrichthyes
Phylum Chordata
Rays belong to what class and phylum?
Class Chondrichthyes
Phylum Chordata
What are two characterisitcs of chrondrichthyes ?
The internal skeleton is cartilaginous
No lungs or swim bladder
How many pair of gill slits do organisms from the class Chondrichthyes have?
Five pair of gill slits
Describe the heterocercal tail fin?
The tail fin is different from top and bottom
Organsims from the chondrichthyes have ________________ pelvic and pectoral fins
PAIRED
Describe placoid scales
Toothlike scales with enamel
Bass belong to which class and phylum?
Class Osteichthyes
PHylum Chordata
Bream belong to which class and phylum?
Class Osteichthyes
PHylum Chordata
Perch belogn to which class and phylum?
Class Osteichthyes
Phylum Chordata
Catfish belong to which class and phylum?
Class Osteichthyes
Phylum Chordata
Tuna belong to which class and phylum?
Class Osteichthyes
Phylum Chordata
Salmon belong to which class and phylum?
Class Osteichthyes
Phylum Chordata
Most common fish belong to which class and phylum
Class Osteichthyes
Phylum Chordata
In class Osteichthyes ___________ scales are usually present
BONY