<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Dismiss
Skip Navigation
Our Terms of Use (click here to view) and Privacy Policy (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use and Privacy Policy.

Chapter 18: From Sponges to Invertebrate Chordates

Difficulty Level: At Grade Created by: CK-12

This may look like a scary creature from your worst nightmare, but it wouldn’t hurt a fly. In fact, it is a fly! The picture shows the charming portrait of a horsefly, up close and personal. Those big, striped, colorful orbs are its eyes. Did you ever look through a kaleidoscope? If so, then you have an idea of what the world looks like to a horsefly.

What other organs do insects like this horsefly have? Besides sensing their environment, what other functions do their organs serve? In this chapter, you will find out. You will read not only about fly eyes. You’ll also read about octopus ink, spider fangs, and other fascinating features of invertebrates.

Image copyright Mikhail Melnikov, 2010. www.shutterstock.com. Used under license from Shutterstock.com.

Chapter Outline

Chapter Summary

Image Attributions

Show Hide Details
Description
Subjects:
Grades:
Date Created:
Sep 19, 2013
Last Modified:
Jun 15, 2016
Files can only be attached to the latest version of chapter
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original