<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation
You are reading an older version of this FlexBook® textbook: CK-12 Biology Go to the latest version.

Chapter 17: Introduction to Animals

Difficulty Level: At Grade Created by: CK-12

Do you know what these greenish, blob-like shapes are? Would it surprise you to learn that they are animals? They don’t look anything like the animals you are probably familiar with—animals such as dogs and deer, fish and frogs. But the greenish blobs are animals nonetheless. They belong to a phylum called Cnidaria, but you may know them as jellyfish. They are very simple animals and not fish at all. How can an organism as simple as a jellyfish be considered an animal? How are animals defined? What traits must an organism have to be classified in the animal kingdom? In this chapter, you will learn the answers to these questions. You will find out just what it means to be an animal.

Chapter Outline

Chapter Summary

Image Attributions


Date Created:

Feb 24, 2013

Last Modified:

Apr 29, 2014
You can only attach files to chapter which belong to you
If you would like to associate files with this chapter, please make a copy first.
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original

Original text