Multiple Choice
The most ancient branch point in animal phylogeny is that between having:
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21. Evolution
Introduction to Evolution and Natural Selection
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Which of the following best distinguishes the Carboniferous period from the Devonian period?
A
The Carboniferous period was characterized by the first land vertebrates, while the Devonian period had only marine life.
B
The Devonian period experienced widespread glaciation, whereas the Carboniferous period had a warm, stable climate.
C
The Carboniferous period is known for extensive coal-forming forests and the diversification of amphibians, while the Devonian period is known as the 'Age of Fishes' due to the dominance and diversification of fish.
D
The Devonian period saw the first appearance of flowering plants, while the Carboniferous period was dominated by gymnosperms.
Verified step by step guidance1
Step 1: Begin by understanding the key characteristics of the Devonian period. The Devonian period is often referred to as the 'Age of Fishes' due to the dominance and diversification of fish species. It also marked significant evolutionary advancements in marine life and the first appearance of terrestrial plants, but not flowering plants.
Step 2: Next, examine the Carboniferous period. This period is characterized by extensive coal-forming forests, which contributed to the formation of large coal deposits. It also saw the diversification of amphibians and the dominance of gymnosperms (non-flowering seed plants).
Step 3: Compare the two periods based on their defining features. The Devonian period is primarily associated with marine life and the evolution of fish, while the Carboniferous period is notable for its terrestrial ecosystems, coal forests, and amphibian diversification.
Step 4: Address any misconceptions in the provided options. For example, flowering plants did not appear during the Devonian period; they evolved much later in the Cretaceous period. Similarly, the Devonian period did not experience widespread glaciation; it was generally warm and stable.
Step 5: Conclude by identifying the correct distinguishing feature: The Carboniferous period is known for extensive coal-forming forests and amphibian diversification, while the Devonian period is known as the 'Age of Fishes' due to the dominance and diversification of fish species.
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