Skeletons

Which of the following animals has a hydrostatic skeleton?

• Bird

• Frog

• Snake

• Worm

In a worm, elongation of the body cavity is brought about by contraction of which muscles?

• Circular

• Extensor

• Flexor

• Longitudinal

Which of the following benefits is not provided by a hydrostatic skeleton?

• Allows body to change shape

• Heals quickly

• Lightweight

• Protection from desiccation

Which of the following animals has an exoskeleton?

• Bird

• Fish

• Locust

• Tortoise

What type of skeleton do spiders have?

• Endoskeleton

• Exoskeleton

• Hydrostatic skeleton

• None

Which of the following is provided by an exoskeleton but not by an endoskeleton?

• Leverage

• Mechanical protection

• Protection from dehydration

• Support

Which of the following is not a characteristic of an exoskeleton?

• Composed of living tissue

• Gasproof

• Growth requires moulting

• Waterproof

What type of skeleton do all vertebrates have?

• Bony skeleton

• Endoskeleton

• Exoskeleton

• Hydrostatic skeleton

Which of the following is not a property of an endoskeleton?

• Grows with the animal

• Provides mechanical protection

• Provides physiological protection

• Susceptible to disease

Bone tissue initially appears in what form?

• Calcium carbonate

• Cartilage

• Collagen

• Compact bone