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9 Cards in this Set
- Front
- Back
three groups of living mammals?
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monotremes, marsupials, placental mammals
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monotremes: ___ - _____ mammals
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egg laying
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monotremes: several systems all open to one opening called the:
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cloaca
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monotremes: young monotremes are nourished by:
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their mothers milk
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monotremes: list the 3 species that exist today
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duckbill platypus, two species of spiny anteaters
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marsupials: examples:
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kangaroos, koalas, wombats
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define marsupial:
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mammals bearing live young that usually complete their development in an external pouch
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define placenta:
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formed when the embryos tissues join with tissues from within the mothers body
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number of placental orders?
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12
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