5. Which chordates are thought to be the most recent mammalian group to have evolved, with live birth, and a placenta to provide oxygen to the developing embryo (over a relatively long gestational period)? A. the prototherians (including the spiny echidna) B. the metatherians (including the kangaroo) C. the monotremes (including the platypus) D. the marsupials (including the opossum) E. the euthdrians (including the beaver)

5. Which chordates are thought to be the most recent mammalian group to have evolved, with live birth, and a placenta to provide oxygen to the developing embryo (over a relatively long gestational period)? A. the prototherians (including the spiny echidna) B. the metatherians (including the kangaroo) C. the monotremes (including the platypus) D. the marsupials (including the opossum) E. the euthdrians (including the beaver)

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter32: Deuterostomes: Vertebrates And Their Closest Relatives

Section: Chapter Questions

Problem 9TYK: Which of the following characteristics does not contribute to powered flight in birds? a. a...

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Some scientists now think that fossils identified as Homo erectus represent which two different species? (a) H. habilis and H. erectus (b) H. ergaster and H. erectus (c) H. heidelbergensis and H. ergaster (d) H. neanderthalensis and H. erectus (e) H. neanderthalensis and H. sapiens
What anatomical and behavioral characteristics of crocodilians demonstrate their relatively close relationship to birds?
Protostomes and deuterostomes typically differ in: a. their patterns of body symmetry. b. the number of germ layers during development. c. their cleavage patterns. d. the size of their sperm. e. the size of their digestive systems.
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