Chordata Characteristics
Fish
Amphibia
Reptiles
Mammals
100
All chordates possess this flexible rod between the gut and nerve chord.
What is a notochord?
100
Members of class agnatha lack this.
What is a jaw.
100
_______________ means "four footed" and describes most amphibians.
What is tetrapod?
100
TRUE OR FALSE: Reptiles are ectotherms.
TRUE
100
TRUE OR FALSE: Mammals are ectotherms.
FALSE
200
TRUE OR FALSE: Some chordates only possess notochords during embroyonic development.
TRUE
200
How does a lamprey feed?
Parasitically - by attaching itself to host fish.
200
How many chambers does an amphibian have in its heart?
What is three?
200
Name one advance reptiles have over amphibians?
Freedom from water, internal fertilization, amniotic eggs
200
Name one example of a monotreme.
Platypus or echidna
300
All chordates possess these filter feeding organs at some point during development.
What are pharangeal slits?
300
What distinguished sharks, skates, and rays from other types of fish?
They have cartilage instead of bone.
300
Which has more developed lungs, frogs or salamanders?
Frogs
300
Order squamata is the most diverse within reptiles. What does it include?
Snakes and lizards
300
For this type of mammal, fetuses complete development outside of the mother's body.
What is a marsupial?
400
How do lancets feed?
They bury themselves in the sand and filter feed.
400
This is the most common class of fish.
What is class osteichthes or bony fish?
400
Toads have ___________ skin, which provides them with a level of waterproofing.
What is keratinized?
400
This order includes the largest reptiles.
What is crocodilia?
400
This is considered the only "disposable" mammal organ.
What is the placenta?
500
What does the notochord develop into in many vertebrates?
The spinal cord.
500
This organ allows bony fish to regulate buoyancy. 
What is a swim bladder?
500
This is the larval stage of a frog.
What is a tadpole?
500
How many species of reptiles are there? (guess should be correct within 2000)
7000
500
Name any three characteristics common to mammals.
Hair, placentas (mostly), mammary glands, differentiated teeth, endothermic, four chambered heart, efficient circulatory system, large brains, parental care
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