Characteristics
This is the property of an object that means it can be divided by one or more imaginary lines into mirror-imaging halves.
What is symmetry?
Animals that have a backbone are called this.
What are vertebrates?
All reptiles have ___________ and breathe air.
What are lungs?
What is aquatic?
A living mammal is a bird if it has this distinct feature.
What are feathers?
This is when the brain and sensory organs are clustered at one end of the body.
What is cephalization?
What are invertebrates?
Most reptiles have dry, scaly skin that protects their bodies from ________________ out.
What is drying?
This kind of fish lacks jaws found in other vertebrates.
What is a jawless fish?
Birds also have __________ that lack teeth.
What are beaks?
This is the part of an animal's body that takes in food, digests it, and absorbs it.
What is the digestive tract, or gut?
These are animals with no symmetry.
What are sponges?
Snakes and lizards together are known as __________.
What are squamates?
These kinds of fish have endoskeletons made of cartilage.
What is cartilaginous?
Mammals are vertebrates that have __________ and produce ______________.
What are hair and milk?
This is a flexible rod structure that develops into part of the spinal column during an animal's life.
What is a notochord?
Sea Stars, sea urchins, and sea cucumbers are called these.
What are echinoderms?
All squamates shed their skin through a process called this.
What is molting?
Amphibians are the only vertebrates to go through this process.
What is metamorphosis?
This kind of mammal grows embryos inside of a structure called a placenta.
What are placental mammals?
Animals that can regulate their inner body temperature are called this, while animals that can't are called this.
What are endotherms and ectotherms?
Gastropods, cephalopods, and bivalves are the three major groups of this phylum.
What is phylum Mollusca (Mollusks)?
Alligators and crocodiles can be distinguished by the shape of this.
What is their snout?
Frogs and toads are recognized by two distinct features. They are___________ and __________.
What are strong hind legs and lack of a tail?
Marsupials have a __________ in which they raise their young.
What is a pouch?