Chapter 35, Problem 1TYK

True or false? Both echinoderms and vertebrates have endoskeletons.

Summary Introduction

To review:

Whether the statement that both echinoderms and vertebrates have endoskeletons is true or false.

Introduction:

Echinoderms are the marine invertebrate animals having the spiny skin. They possess a radial symmetry. The vertebrates are the animals that possess a skeleton and a backbone.

Explanation of Solution

The body of echinoderms is supported and protected by a hard structure present beneath the thin layer of skin or the epidermal tissue. This hard structure is called an endoskeleton, which is made up of calcium carbonate.

The skeleton in vertebrates is located inside the body and is called endoskeleton. Their endoskeleton consists of bones and cartilages. Therefore, both echinoderms and vertebrates have an endoskeleton that gives support and rigidity to their body.

Conclusion

The echinoderms as well as the vertebrates have the skeleton beneath their skin that provides support to their bodies. This skeleton is called endoskeleton. So, the given statement is $\boxed{\text{true}}$.