Class Myxini from Group Agnatha Flashcards
What is the body like?
slender, eel-like, rounded with naked skin and has slime glands
Does it have any appendages or fins?
No paired appendages and no dorsal fin
What is the skeleton made of?
Fibrous and cartilaginous skeleton
What is the notochord like?
Notochord persistent
What is the biting mouth like?
two rows of eversible teeth and no jaws
What is the terminal mouth like?
four pairs of tentacles
What is the nasal sac like?
Nasal sac with duct to pharynx
How many gills?
5-16 pairs of gills with variable number of gill openings
What is the nerve cord like?
Dorsal nerve cord with differentiated brain
What are the sense organs like?
Sense organs of taste, smell, and hearing; almost completely blind
What is fertilization like?
External fertilization
What is the class that has hagfishes?
Myxini
What organism does Myxini has?
Hagfishes
Myxini is in the Subphylum?
Hyperotreti