Educational worksheet on echinoderms focusing on crinoids, featuring a labeled diagram and descriptive text.

A page from a worksheet titled "Echinoderm Coloring" with text about echinoderms and a diagram of a crinoid, including labeled parts such as the stalk, calyx, and arms.

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Show Answer Key & Explanations Step-by-step solution for: Echinoderm Coloring Packet

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1. The echinoderm shown is a sea urchin.
2. The tube feet are located on the underside of the echinoderm, arranged in rows along the five ambulacral grooves that radiate from the center.
3. The spines are the long, pointed structures covering the entire outer surface of the echinoderm's body.
4. The mouth is located on the underside (oral surface) at the center of the body, surrounded by the tube feet.
5. The anus is located on the top side (aboral surface) at the center of the body, opposite the mouth.

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