QUIZ #6 Flashcards
fish
Class Osteichthyes
what is the function of the air bladder
controls buoyancy
how many chambers do class Osteichthyes heart have?
2
3 orders of class Amphibia
gymnophiona(caecilians)
urodela(salamanders)
Anura(frogs and toads)
what is unique about order gymnophiona
don’t have legs
what is unique about order urodela
has tail
what is unique about order Anura
absence of tail in adulthood
what is unique about a frogs tongue
it is attached to the front of the mouth and not the back
what are the characteristics of chordates
myomeres, crest cells, a developed brain
what autapomorphies is subphylum Urochordata
soft, sack-like body with two siphon opening
what autapomorphies is subphylum cephalochordata
wheel organ
how do tunicates feed
trapping food in its siphon
class chondrichthyes
sharks
how do you know the gender of the shark
male- has claspers on the cloaca
female- does not
