Evolutionary Biology: Understanding Homologous and Analogous Structures

Which of the following is an example of homologous structures?

• Fins of sharks and flippers of dolphins

• Bone structure of human hands and dolphin flippers

• Wings of bats and birds

• Spines of cacti and teeth of predators

Tags

NGSS.MS-LS4-2

What is the primary reason for the similarity in bone structure among bat wings, dolphin flippers, and human hands?

• Convergent evolution

• Common environmental pressures

• Common ancestry

• Random genetic mutations

Tags

NGSS.MS-LS4-2

What does the presence of homologous structures suggest about species?

• They perform the same functions

• They have a common ancestor

• They live in the same environment

• They are of the same species

Tags

NGSS.MS-LS4-2

What is the significance of studying homologous structures?

• To classify species into correct taxonomic groups

• To predict future evolutionary changes

• To understand the function of body parts

• To trace the evolutionary history of species

Tags

NGSS.MS-LS4-2

What are the pitcher plant, venus flytrap, and cactus an example of?

• Analogous structures

• Homologous structures

• Symmetrical structures

• Identical structures

Tags

NGSS.MS-LS4-2

Which of the following best describes the relationship between the structures of cacti spines and the leaves from which they evolved?

• Unrelated due to different species

• Identical due to genetic mutations

• Homologous due to a common ancestry

• Analogous due to similar functions

Tags

NGSS.MS-LS4-2

Which structures are evidence of divergent evolution?

• Symmetrical structures

• Homologous structures

• Analogous structures

• Identical structures

Tags

NGSS.MS-LS4-2

What term is used to describe structures in different species that look similar but are not due to common ancestry?

• Homologous structures

• Analogous structures

• Symmetrical structures

• Identical structures

Tags

NGSS.MS-LS4-2

Why are the wings of bats and birds considered analogous structures?

• Because they have the same color

• Because they evolved from a common ancestor

• Because they are made of the same materials

• Because they perform the same function but evolved independently

Tags

NGSS.MS-LS4-2

What evolutionary concept is illustrated by the different structures of bat and eagle wings?

• Homologous structures

• Gene flow

• Analogous structures

• Genetic drift

Tags

NGSS.MS-LS4-2