Quiz on Skeletons

An internal skeleton, like what humans have, is called:

• Exoskeleton

• Endoskeleton

• Hydrostatic skeleton

• Cartilage

An external skeleton, like the shell of a crab, is called:

• Endoskeleton

• Exoskeleton

• Hydroskeleton

• Mesoskeleton

Organisms with an endoskeleton (internal skeleton) are known as:

• Invertebrates

• Vertebrates

• Arthropods

• Mollusks

Organisms with an exoskeleton (external skeleton) or no skeleton at all are known as:

• Vertebrates

• Invertebrates

• Mammals

• Reptiles

An organism with a constant internal body temperature is known as:

• Poikilotherm

• endotherm

• Ectotherm

• Exotherm

An organism with a body temperature that changes with the environment is known as:

• Endotherm

• Ectotherm

• Homeotherm

• Poikilotherm

Scientists that classify living things into groups are called:

• Botanists

• Zoologists

• Taxonomists

• Ecologists