Animal Classification
An animal with a backbone.
What is a vertebrate?
page 376
A thick, hard outer covering that protects and supports animals' bodies.
What is an exoskeleton?
page 387
Animals whose skin is waterproof and covered in scales.
What are reptiles?
page 396
Animals without a backbone or no internal structure to help support their bodies.
What are invertebrates?
page 383
Describes an organism's body plan.
What is symmetry?
page 377
A structure, such as a leg or an arm, that extends from the body's central part.
What is an appendage?
page 387
Animals that have gills for absorbing oxygen gas and paired fins.
What are fish?
page 394
Cannot be divided into any two parts that are nearly mirror images of each other.
What is asymmetry?
page 377
An arthropod that has four pairs of jointed legs and two body segments. ( examples: spiders, ticks, and scorpions)
What are Arachnids?
page 388
All of these animals have hair or fur covering their bodies.
What are mammals?
page 398
The simplest of the invertebrates that belong to the phylum Porifera.
What are sponges?
page 384
Classify the members of the animal kingdom into.
What is a phylum?
page 378
Many people like to eat these. (examples: lobster or crabs)
What are crustaceans?
page 388
Animals that must lay their egg in moist environments, such as ponds or lakes.
What are amphibians?
page 395
Another name for this worm is a nematode.
What is a roundworm?
page 385
Proteins in an animal's cells that help with classification.
What are DNA and RNA?
page 378
The largest order of arthropods.
What are insects?
page 387
This animal's circulatory system includes a four-chambered heart.
What is a bird?
page 397