Activity+Four

Unit 8 Chapter 23 Who Am I? Part 2

Choose among the terms below to answer the riddles.


 * filter feeder
 * medusa
 * mesoglea
 * polyp
 * radula
 * water vascular system

1. I eat by straining particles from the water. 2. I am a filelike feeding organ found in mollusks. 3. I am the umbrella-shaped body form of a cnidarian. 4. I am a series of water-filled radial canals that extend along each arm of a sea star. 5. I am the cylindrical-shaped body form of a cnidarian. 6. I am a non-cellular jelly-like material that separates the two tissue layers of a cnidarian.

Now click on the links above and watch two videos. What were the two videos about?