PHYSIOLOGY
REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Kangaroos are mammals that lack a placenta. Therefore, they must have an alternate way of supplying the developing embryo with
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nutrients
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carbon dioxide
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enzymes
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genetic information
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Explanation:
Detailed explanation-1: -Pregnant marsupials don’t develop a placenta in exactly the same way as eutherians do, but they do have a yolk-sac placenta in the womb that delivers nutrients to the embryo.
Detailed explanation-2: -Examples of non-placental mammals are koalas, opossums, kangaroos, the duck-billed platypus, and the spiny anteater.
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