Veterinary Technician

Category - Animal Care

What are the only vertebrate animals to have a fused collarbone?
  1. Monkeys
  2. Cats
  3. Birds
  4. Elephants
Explanation
Answer: C - Birds are the only vertebrate animals to have a fused collarbone. It is also called a keeled breastbone, or the "wishbone." The keel of the sternum serves as an attachment site for the muscles used for flight, or similarly for swimming in penguins.
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