Comparative Anatomy Interactive Lesson

Multiple Choice

Which of the following best describes anatomy?

• The study of body structure

• The study of animal behavior

• The study of plant growth

• The study of weather patterns

Open Ended

What do you notice that these species have in common? List as many ideas as possible!

Multiple Choice

A ___ ancestor is the most recent ancestor that two individuals share.

• common
• recent

• old

• grandfather

Open Ended

If two species are closely related, will their common ancestor be recent or long ago?

Open Ended

What do you notice about the anatomy of the species in the picture?

Multiple Choice

What is this an example of?

• vestigial structures
• embryology
• homologous structures
• fossil record

Multiple Choice

Which of the following best describes analogous structures?

• Body parts that look similar and have similar functions but have a different structure and do not come from a common ancestor.

• Body parts that are identical in structure and function and come from a common ancestor.

• Body parts that have no apparent purpose and are evidence of previous evolutionary forms.

• Body parts that are formed from similar DNA and have a common ancestor.

Multiple Select

Which of the following are examples of vestigial structures in animals?

• Whale pelvic bone

• Human appendix

• Penguin wing

• Shark fin

Multiple Choice

The similarities of the bones in the diagram provide evidence that---

• The organisms shown lived in the same natural envionrment
• The organisms shown may have developed from a common ancestor
• The organisms shown have the same genetic diseases
• All vertebrate species have identical forelimbs

Multiple Choice

What type of structure is present in the picture?

• Homologous
• Vesitigial
• Analogous

Multiple Choice

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

Multiple Choice

How would you describe this evolution?

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

Multiple Choice

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures