Organization and Development of Living Organisms

Front

What is the skeletal system?

Back

The skeletal system is a framework of bones that provides support and shape to the body of animals.

Front

What is an exoskeleton?

Back

An exoskeleton is a hard outer structure that provides support and protection to certain animals, such as arthropods.

Front

What are vertebrates?

Back

Vertebrates are animals that have a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.

Front

What are gills?

Back

Gills are the organs in fish that allow them to breathe underwater by extracting oxygen from water.

Front

What is keratin?

Back

Keratin is a protein that makes up the scales of fish and the feathers of birds.

Front

What is a characteristic shared by birds and most fish?

Back

Both birds and most fish are animals that lay eggs.

Front

What do alligators, Florida panthers, and manatees have in common?

Back

They all have a backbone.

Front

What is the function of the fins in fish?

Back

Fins help fish to swim and maintain balance in the water.

Front

What is the swim bladder?

Back

The swim bladder is an internal gas-filled organ that helps fish maintain buoyancy in water.

Front

What is the difference between vertebrates and invertebrates?

Back

Vertebrates have a backbone, while invertebrates do not.