BIOD 151 MODULE 6 EXAM
COMPREHENSIVE QUESTIONS AND
SOLUTIONS
◉ Give an example of homologous structures.
Answer: Human arm, cat leg, whale flipper, and bat wing all have
similar bone structures but different functions.
◉ Why are homologous structures important evidence for
evolution?
Answer: They show that different species share a common
ancestor.
◉ What are analogous structures?
Answer: Structures that have similar functions but different
underlying structures and no common ancestor.
◉ Give an example of analogous structures.
Answer: Bird wings and insect wings both allow flight but are
built differently.
◉ What do analogous structures show about evolution?
Answer: They show convergent evolution—unrelated species
adapting similarly due to similar environments.
, ◉ What are vestigial structures?
Answer: Body parts that have lost most or all of their original
function over time.
◉ Give an example of vestigial structures.
Answer: Human appendix, wisdom teeth, whale pelvic bones.
◉ Why are vestigial structures evidence for evolution?
Answer: They show how species have changed over time from
ancestors that used those structures.
◉ What is comparative embryology?
Answer: The study of similarities in embryos of different species.
◉ What does embryology show about evolution?
Answer: Early embryos of different species look similar,
suggesting a common ancestor.
◉ What happens to embryos as they develop?
Answer: They become more different as they develop traits
specific to their species.
◉ What is comparative biochemistry?
COMPREHENSIVE QUESTIONS AND
SOLUTIONS
◉ Give an example of homologous structures.
Answer: Human arm, cat leg, whale flipper, and bat wing all have
similar bone structures but different functions.
◉ Why are homologous structures important evidence for
evolution?
Answer: They show that different species share a common
ancestor.
◉ What are analogous structures?
Answer: Structures that have similar functions but different
underlying structures and no common ancestor.
◉ Give an example of analogous structures.
Answer: Bird wings and insect wings both allow flight but are
built differently.
◉ What do analogous structures show about evolution?
Answer: They show convergent evolution—unrelated species
adapting similarly due to similar environments.
, ◉ What are vestigial structures?
Answer: Body parts that have lost most or all of their original
function over time.
◉ Give an example of vestigial structures.
Answer: Human appendix, wisdom teeth, whale pelvic bones.
◉ Why are vestigial structures evidence for evolution?
Answer: They show how species have changed over time from
ancestors that used those structures.
◉ What is comparative embryology?
Answer: The study of similarities in embryos of different species.
◉ What does embryology show about evolution?
Answer: Early embryos of different species look similar,
suggesting a common ancestor.
◉ What happens to embryos as they develop?
Answer: They become more different as they develop traits
specific to their species.
◉ What is comparative biochemistry?
