[Campbell Biology P.792] What is a key distinguishing feature of monotremes compared to mars... | Practice Question

What is a key distinguishing feature of monotremes compared to marsupials and eutherians, according to the provided text?

  • A: They lay eggs.
  • B: They have higher metabolic rates.
  • C: They possess nipples for nursing their young.
  • D: Their young complete development in a maternal pouch.

Explanation

The text explicitly states: 'Monotremes are the only mammals that lay eggs inset .' This is a unique characteristic differentiating them from both marsupials and eutherians, which give birth to live young.