Select the invertebrate.

Choose the vertebrate.

Choose the vertebrate.

Which one below is not an organ found in the human body (but common in reptiles and birds)?

Organs (select all that apply)

Invertebrates

Which organism has an exoskeleton?

Starfish do not have a backbone, but do have an internal structural support system

Which group is NOT an invertebrate?

Which one is a mollusk?

Arthropods have an exoskeleton with jointed legs and arms. Select all the arthropods.

Ecotherms are organisms whose body temperatures change with the environment. Find the ecotherm.

Which example is an adaptation for movement? Select all that apply.

Which one is not considered a vertebrate?

Cnidarians have stinging cells and take food into a central body cavity. Find all the cnidarians.