Anatomical Structures

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals
• They live in similar environments
• They have a common ancestor
• All organisms resemble humans

Bird wings and butterfly wings are an example of

• Homologous structure
• Analogous structure
• Mimicry
• Camoflague

Analogous structures show common ancestry.

• True
• False

Evolved from the same ancestor, but have different functions

• Homologous structures

• Analogous structures

• Vestigial structures

• All of the above

Evolved from different ancestors, but due to living in similar environments have a similar function.

• Homologous structures

• Analogous structures

• Vestigial structures

• All of the above

An anatomical feature that no longer seams to have a purpose in the current form of an organism

• Homologous structure

• Analogous structure

• Vestigial structure

• None of the above

Which of the following are vestigial structures humans have? Select all that apply.

• Appendix

• Tailbone

• Forearm bones

• Goosebumps

Whales have pelvic bones. What type of structure does this best represent?

• Homologous structure

• Analogous structure

• Vestigial structure

• None of the above

The structures shown are_________

• homologous
• heterologous
• analogous
• vestigial

How would you describe this evolution?

• Homologous structure
• Analogous structure
• Structural adaption
• Functional adaption