Curated OER
Sponges, Cnidarians, Flatworms, and Roundworms
In this simple animals instructional activity, high schoolers compare and contrast the body plans of sponges, cnidarians, flatworms, and roundworms. This instructional activity has 4 short answer questions.
Cold Spring Harbor Laboratory
Dna From the Beginning: Master Genes Control Body Plans
Homeobox genes are important because they determine the overall body plan for most animals. This article explains the experiments that helped scientists discover these master genes. Article includes animations, pictures, video,...
Biology 4 kids
Biology4 Kids: Cnidarian Anatomy
Find out about the anatomy of a cnidarian on this simplified biology reference page.
TED Talks
Ted: Ted Ed: A Simple Way to Tell Insects Apart
Anika Hazra explains how the features of an insect's mouthparts can help identify which order it belongs to, while also providing clues about how it evolved and what it feeds on.
TED Talks
Ted: Ted Ed: Why Are Fish Fish Shaped?
Lauren Sallan explains why certain fish features are so common, and what it reveals about fish.