Chapter 34 Flashcards
What is the one phylum discussed in this chapter?
Chordata
What are the three subphyla within the phylum Chordata?
Cephalochordata
Urochordata
Vertebrata
What are the 6 classes from the phylum vertebrata discussed in this chapter?
Cephalaspidomorphi Myxini Chondrichthyes Osteichthyes Amphibia Reptilia
What are the subphyla cephalochordata?
Commonly called lancelets
Small eel like creature
Marine
What are the subphyla Urochordata?
Called tunicates
Sea squirts
Marine
What are the subphyla vertebrata?
Have vertebrae column
What is the class Cephaspidomorphi?
Jawless fishes
Lampreys
Snakelike body, no scales
Cartilage skeleton
What is the class Myxini?
Jawless fishes too
Slime is used as a defence mechanism
Use rasps instead of jaws to eat
Commonly called slime eels
What is the class Chondrichthyes?
Cartilaginous fishes
Sharks rays and skates
Cartilage skeleton
What is the class Osteichthyes?
Bony fishes
Largest class
Moray eel to seahorse
What is the class amphibia?
Frogs, toads, salamanders, newts
First land vertebrates
Fully aquatic embryos
What is the class reptilia?
Crocodiles, alligators, turtles, tortoises, lizards and snakes
Do not require water for reproduction
Scaly dry skin
What is the amniotic egg?
Allows vertebrates to further explore terrestrial habitats
Because it allowed reproduction to be done outside water
What are the common Chordata characteristics?
Have dorsal, hollow nerve chord
Have flexible rod like internal support structure called notochord
Have paired gill slits
What is “cold blooded” and what are the animals that use this?
Cold blooded means ectothermic which means their body temperature changes with the temperature of their environment
Fishes, amphibians, and reptiles usebthis
What is “warm blooded” and what are the animals that use this?
Warm blooded means endothermic which means their body temperature remains fairly constant regardless of the temperature of their environment
Birds and mammals use this
What are the lateral lines used in sharks?
Lines that extend across the sharks body to sense vibration
What is the operculum found in bony fishes?
A protective bony flap that protects the gills
What is the swim bladder found in most bony fishes?
A gas filled sac in the upper part of their body cavities that regulates buoyancy of the fish
What is the nictitating membrane?
A transparent eyelid that allows the frog to see underwater
What is the tympanic membrane?
A round eardrum behind each eye that picks up sound waves from air or water
