Arthropods Invaded Land About 100 Million Years Before Vertebrates Did

question 12

Multiple Choice

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that

• A) arthropods evolved before vertebrates did.
• B) extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates.
• C) ancestral arthropods must have been poorly adapted to aquatic life, and thus experienced a selective pressure to invade land.
• D) vertebrates evolved from arthropods.
• E) arthropods have had more time to coevolve with land plants than have vertebrates.

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