On His Voyage, Darwin Observed Similarities Between Fossils of the Extinct

question 60

Multiple Choice

On his voyage, Darwin observed similarities between fossils of the extinct armored glyptodonts and modern armadillos. This observation led him to reason that ____.

• A)glyptodons became extinct at the same time as the dinosaurs
• B)evolution occurred primarily by artificial selection
• C)the current landscape of the Earth was sculpted over millions of years
• D)glyptodons were ancient relatives of armadillos
• E)acquired traits are passed from parents to offspring

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Definitions:

Biological Clocks

Biological clocks are internal mechanisms in organisms that regulate cycles of activity and rest, including sleep-wake cycles and hormonal changes, in accordance with environmental changes.

Environmental Cues

Signals from the environment that can affect the behavior and physiology of organisms.

Biological Rhythms

Innate, cyclical patterns in biological processes and behaviors observed in living organisms, including circadian rhythms and seasonal cycles.

Peripheral Nervous System

The part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord.