Types of Animal Skeletons Quiz

exoskeleton, endoskeleton, hydroskeleton

bones and cartilages

Cartilage is a rigid connective tissue found in the skeletal systems of both vertebrates and invertebrates.

<p>Vertebrates have an endoskeleton centered around an axial vertebral column, while invertebrates lack a vertebral column and have a variety of skeletal structures.</p> Signup and view all the answers

<p>Hard-shelled exoskeletons (arthropods and most molluscs), plated internal shells (e.g. cuttlebones in some cephalopods), rods (e.g. ossicles in echinoderms), hydrostatically supported body cavities (most), and spicules (sponges).</p> Signup and view all the answers

<p>The three types of skeletons mentioned in the text are exoskeleton, endoskeleton, and hydroskeleton. The exoskeleton is a rigid outer shell that holds up an organism's shape. The endoskeleton is a rigid internal frame to which the organs and soft tissues attach. The hydroskeleton is a flexible internal structure supported by the hydrostatic pressure of body fluids.</p> Signup and view all the answers

<p>Vertebrates are animals with an endoskeleton centered around an axial vertebral column. Invertebrates are animals that lack a vertebral column.</p> Signup and view all the answers

<p>Cartilage is a rigid connective tissue found in the skeletal systems of both vertebrates and invertebrates.</p> Signup and view all the answers

<p>Examples of invertebrate skeletal variations include hard-shelled exoskeletons (arthropods and most molluscs), plated internal shells (e.g. cuttlebones in some cephalopods) or rods (e.g. ossicles in echinoderms), hydrostatically supported body cavities (most), and spicules (sponges).</p> Signup and view all the answers

<p>A skeleton is the structural frame that supports the body of most animals.</p> Signup and view all the answers