Chordates
an animal that, sometime in its life, has a tough, flexible rod along its back
Chordate
An invertebrate with an outside skeleton, bilateral symmetry, and jointed appendages
Jointed-leg Animal
Three of the seven vertebrate classes are ____.
An example of an amphibian
a) fish
b) frog
c) cat
b) frogs
An animal that has hair an feeds milk to its young
Mammal
a skeleton on the inside of the body
Endoskeleton
A structure that grows out of an animals body
Appendage
Fish are ____-blooded. (Hot or cold)
Cold
_____ live half their life in the water, and the other on land.
Frogs
You are a ______.
Mammal
What is another term for vertebrates?
Chordates
A skeleton on the outside of the body
Exoskeleton
_______ ____ are fish that have no jaws and are not covered with scales.
Jawless Fish
Without _____, an amphibians skin would dry out.
Water
_______ ______ are body parts that produce milk.
Mammary Glands
___________ have large brains, well-developed senses, and are very intelligent animals.
Vertebrates
Shedding of the exoskeleton
Molting
_________ ____ are fish in which the entire skeleton is made of cartilage.
Cartilage Fish
Amphibians take in water from their moist skin or through the lining in their _____.
Mouth
All _______ care for their young.
mammals
One of the seven vertebrate classes
jawless fish, cartilage fish, bony fish, amphibians, reptiles, birds, or mammals
Appendages of the head that are used for sensing smell and touch
Antennae
____ ____ have skeletons made mostly of bone, not of cartilage.
Bony fish
The state of being inactive during cold weather
Hibernation
Kangaroos and opossums are pouched _______.
mammals