Which of the following is an example of a placental mammal?

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Multiple Choice

Which of the following is an example of a placental mammal?

Explanation:
Placental mammals develop inside the mother’s uterus and are nourished through a placenta, allowing longer development before birth. Humans fit this pattern, so they are a placental mammal. The other animals don’t: platypus and echidna are monotremes that lay eggs and have only limited, non-placental lactation, while kangaroos are marsupials with a short internal gestation followed by most of the development occurring in a pouch.

Placental mammals develop inside the mother’s uterus and are nourished through a placenta, allowing longer development before birth. Humans fit this pattern, so they are a placental mammal. The other animals don’t: platypus and echidna are monotremes that lay eggs and have only limited, non-placental lactation, while kangaroos are marsupials with a short internal gestation followed by most of the development occurring in a pouch.

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