Evolution - Change Over Time

Studying the relationship between organisms by comparing their structures

• biological evolution
• fossil record
• comparative anatomy 
• variation

Studying relationships between organisms by comparing their embryos

• adaptation

• variation

• embryology

• homologous structures

Which structure is homologous to the human arm?

• fish's gill
• bird's bill
• insect's wing
• bat's wing

Bats have the ability of echolocation which helps them navigate and hunt.  This is an example of --

• mutation
• disease
• adaptation
• selection

What bird, studied by Charles Darwin on the Galapagos Islands, was used as evidence to support his theory of natural selection?

• flamingos
• ostriches
• finches
• canaries

Which example would NOT be considered a fossil?

• an imprint of a bird feather
• animal tracks in mud that hardened to rock
• an insect preserved in tree sap
• cave paintings

When looking at two tree frogs, a student noticed that one of the frogs had longer toes than the other.  This is an example of --

• cloning
• a fossil
• replication
• a variation

What most likely happened to species that are found in the fossil record but have no living members?

• They mutated into other species.
• They had offspring of a different species.
• They became extinct.
• They were never truly living.

Charles Darwin noted that many of the animals on the Galapagos Islands were --

• similar but not always identical to animals on the mainland
• identical to animals on the mainland except they were always slightly smaller
• much larger and dirtier than other animals he had observed on the mainland
• starving to death because of lack of living space

Which term refers to the process by which individuals that are better adapted to their environment are more likely to survive and reproduce?

• natural selection
• overproduction
• competition
• variation