1.1 Types of skeleton

What are animals with a backbone called?

• vertebrates

• invertebrates

• skeletors

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 (opt. 1)

• Exoskeleton (opt.2)

• Human skeleton (opt.3)

• Hydrostatic skeletons (opt.4)

• Options ( 1,2,4)

Hydrostatic skeletons occur in...

• Flatworms, roundworms, earthworms, starfish and slugs.

• Frogs and newts.

• Insects, spiders, scorpions and crabs.

• All of the above.

What characteristics supports exoskeleton?

• Limits the size of the animals.

• Great flexibility.

• Bones can vary in size to support mass.

• Fluid shape.

Endoskeletons are skeletons outside the body.

• True

• False

Soft rubbery tissue that keeps bone from rubbing together

• cartilage

• marrow

• ligament

• vertebrae

What bone is this?

• Rib Cage
• Clavicle
• Mandible
• Vertebrae

Exoskeletons are soft.

• True

• False