Details

Title: !Fishes 2

Description: Jawless Fishes; Superclass Agnatha:Lamprey

Total Flash Cards: 13

Created: 11/10/2009 23:03:48

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Additional Biology Flashcards

Cards in this set:

Term
Class Cephalaspidomorphi
 Definition
Order Petromyzontiformes; one family Petromyzontidae
Term
jaws
 Definition
none
Term
vert
 Definition
notochord w/o clear vert
Term
fins
 Definition
no paired fins
Term
nose
 Definition
single nostril, has dead end
Term
vision
 Definition
eyes
Term
dorsal
 Definition
fin
Term
lateral line
 Definition
neuromasts
Term
sensory
 Definition
2 semicircular canals
Term
2 life stages
 Definition
larval ammocoete; adult (parasitic, nonparasitic)
Term
larval ammocoete
 Definition
filter feeder, buried in mud; strongly resembles chordate ancestors; long stage, up to 6 yrs
Term
parasitic adult
 Definition
migratory and predaceous; oral disc w/ horny teeth on disk and tongue; parasitic on other fish:rasp holes and suck out blood; return to streams to spawn; semelparous
Term
nonparasitic adult
 Definition
nonmigratory and nonpredaceous; american brook lamprey; repeated evolution of this form from parasitic parent species; lengthening of larval phase and shortening of mature phase