Zoology Structure & Movement Review

What is a major difference between a hydrostatic skeleton and an endoskeleton?

• A hydrostatic skeleton is located inside the body and the endoskeleton outside.

• A hydrostatic skeleton is found in worms and an endoskeleton in invertebrates.

• An endoskeleton is located inside of the bodies of vertebrates and are composed of bone, while hydrostatic skeletons are fluid filled skeletons.

• Both ( option 1 and 2)

Which type of skeleton does a snail posses?

• Endoskeleton

• Hydrostatic skeleton

• Exoskeleton

• Both ( hydrostatic skeleton and exoskeleton)

The main skeletons types are classified as ...

• Endoskeleton

• Exoskeleton

• Cartilaginous skeleton

• Hydrostatic skeletons

• Bony Skeleton

Hydrostatic skeletons occur in...

• Flatworms, roundworms, earthworms, starfish and slugs.

• Frogs and newts.

• Insects, spiders, scorpions and crabs.

• All of the above.

Lack of protection is a disadvantage for which skeleton type?

• Endoskeleton

• Hydrostatic skeleton

• Exoskeleton

• None of the above

What characteristic is true of the exoskeleton?

• Limits the size of the animals.

• Great flexibility.

• Bones can vary in size to support mass.

• Fluid shape.

Exoskeletons are soft.

• True

• False

Endoskeletons are skeletons outside the body.

• True

• False

When animals shed their exoskeleton it is called:

• mashing

• molting

• shedding

• reviving

A skeleton made of mineralized tissues is...

• is made up of small segments

• protects the soft inner organs.

• is found in sponges and echinoderms

• is found on every animal.