Chordates Flashcards
Which group(s) has a blade-like shape?
Cephalochordata, Lancelets
Which group(s) functions as marine suspension feeders that retain characteristics of the chordata body plan as adults?
Cephalochordata, Lancelets
Which group(s) do Lancelets belong to?
Cephalochordata
Which group(s) only resemble chordates during larval stage?
Urochordata, Tunicates
Which group(s), as an adult, draws in water through an incurrent siphon, filtering for food?
Urochordata, Tunicates
Which group(s), when attacked, shoots water through an excurrent siphon?
Urochordata, Tunicates
Which group(s) has fewer Hox genes than other vertebrates?
Urochordata, Tunicates
Which group do Tunicates belong to?
Urochordata
Which group(s) are jawless vertebrates?
Myxini/Hagfishes, Petromyzontida/Lamprey
Which group(s) has a cartilaginous skull, reduced vertebrae, and a flexible rod of cartilage derived from the notochord?
Myxini, Hagfishes
Which group(s) has a small brain, eyes, ears, and tooth-like formations?
Myxini, Hagfishes
Which group(s) are marine, mostly bottom-dwelling scavengers?
Myxini, Hagfishes
Which group do Hagfishes belong to?
Myxini
Which group(s) are mostly parasites that feed by clamping their mouth on a live fish?
Petromyzontida, Lamprey
Which group(s) have cartilaginous segments surrounding the notochord and arching partly over the nerve cord?
Petromyzontidam, Lamprey
Which group does the Lamprey belong to?
Petromyzontida
Which group(s) has a skeleton primarily composed of cartilage?
Chondrichthyes
Which group has Sharks, Skates, and Rays?
Chondrichthyes
Which group has Ratfishes and Chimeras?
Chondrichthyes
Which group(s) has fins supported by long flexible rays and are modified for maneuvering, defense, and other functions?
Actinopterygii, Ray-Finned
Which group has Ray-finned fish?
Antinopterygii
Which group has Yellowfin tuna, lion fish, seahorse, moray eel, pollock, and hoki?
Actinopterygii
Which group was thought to have gone extinct 75 million years ago, until one was caught off the coast of South Africa?
Actinistia, Coelacanths
Which group has Coelacanths?
Actinistia