Exploring Skeletons in Animals

What is a skeleton?

• A skeleton is a fluid-filled cavity in invertebrates.

• A skeleton is a type of muscle tissue.

• A skeleton is a structure of bones in vertebrates.

• A skeleton is a collection of organs in plants.

Name two types of vertebrates.

• Amphibians

• Insects

• Mammals, Birds

• Reptiles

What is the main difference between vertebrates and invertebrates?

• Vertebrates can fly; invertebrates cannot.

• Invertebrates have a complex nervous system; vertebrates do not.

• Vertebrates are smaller than invertebrates.

• Vertebrates have a backbone; invertebrates do not.

List three examples of invertebrates.

• jellyfish, octopus, earthworm

• goldfish

• eagle

• tiger

What type of skeleton do fish have?

• Fish have a muscular skeleton.

• Fish have an exoskeleton.

• Fish have a segmented skeleton.

• Fish have a bony or cartilaginous skeleton.

How do vertebrates support their bodies?

• Vertebrates use muscles to support their bodies.

• Vertebrates have no structural support system.

• Vertebrates support their bodies using a skeletal system made of bones or cartilage.

• Vertebrates rely on water for body support.

What is an exoskeleton?

• A soft inner layer that cushions an organism.

• An exoskeleton is a hard outer structure that supports and protects an organism.

• A type of muscle that helps in movement.

• A fluid-filled sac that provides buoyancy.

Can you name an animal with a hard outer shell?

• Frog

• Goldfish

• Turtle

• Snake

What is the function of a skeleton in animals?

• The skeleton is primarily for camouflage and coloration.

• The skeleton helps in digestion and nutrient absorption.

• The skeleton supports the body, protects organs, enables movement, stores minerals, and produces blood cells.

• The skeleton regulates body temperature and hydration.

How do invertebrates move without a backbone?

• Invertebrates move using muscular contractions, cilia, or hydrostatic pressure.

• Invertebrates move by flying using wings.

• Invertebrates use a rigid skeleton for movement.

• Invertebrates swim using fins like fish.