31. Which mammalian group is considered to be the most ancient to have evolved, using the older reptilian reproductive strategy of laying eggs (ovipary) rather than live birth (vivipary)? A. the prototherians (including the duck-billed platypus) B. the eutherians (including the beaver) C. the metatherians (including the kangaroo) D. the placentals (including the mouse) E. the marsupials (including the opossum)

31. Which mammalian group is considered to be the most ancient to have evolved, using the older reptilian reproductive strategy of laying eggs (ovipary) rather than live birth (vivipary)? A. the prototherians (including the duck-billed platypus) B. the eutherians (including the beaver) C. the metatherians (including the kangaroo) D. the placentals (including the mouse) E. the marsupials (including the opossum)

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter22: The Evolution Of Primates

Section: Chapter Questions

Problem 1TYU

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Reptiles, including birds, belong to one major lineage of amniotes, and________ belong to another. a. sharks c. mammals b. frogs and toads d. salamanders
Monotremes are unique mammals because they: A. posses hair B. give birth to live young C. secret milk in a pouch D. lay eggs
When vertebrates emerged from the water and began colonizing the land, there were plenty of advantages in doing so:. reduced competition, increased oxygen levels, and warmer temperatures. Living on land had some disadvantages as well. What is the key adaptation that reptiles made that allowed them to totally escape the aquatic environment? O A. Devleopment of dry skin and scales. O B. Development of a water saving kidney O C. Development of the amniotic egg. O D. Development of the lung instead of gills
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)
What is the best evidence that Monotremes are a transitional taxon between reptiles and other mammalian groups? O A. they have fur, have mammary glands without nipples, have a cloaca and lay leathery eggs. O B. They have poison glands like a snake, have a tough beak, have web-feet like a beaver, and give birth to live young. O C. their reproducive tract resembles a kangaroo's but they lay eggs and lack a marsupial pouch O D. they have fur, lay eggs but don't suckle their youg as they lack mammary glands, and appear in the fossil record before the placental mammals. 11:52 Al 12/16/202 ere to search End F10 PgUp PF11 F12 PrtScn Home F9 DII F5 F7 F6 F4 F3 F2 F1 & %3D 23 2$ 9. 7 3 4 W J K L S D F C V .. .- * CO
45. Which of the following chordate groups is believed to have been the most ancient to evolve (during the Cambrian Period, from 542 to 488 million years ago)? A. Class Amphibia (e.g., frogs, toads, salamanders, and caecilians) B. Class Reptilia (e.g., lizards, snakes, turtles, and crocodiles) C. Class Mammalia (e.g., mice, rats, dogs, wolves, and humans) D. Class Aves (e.g., eagles, penguins, pelicans, and sparrows) E. Class Agnatha (e.g., conodonts, hagfish, and the sea lamprey)
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Which of the following features does not distinguish humans as a member of phylum Chordata? a. Human embryos undergo indeterminate cleavage. b. A spinal cord runs along an adult human’s dorsal side. c. Human embryos exhibit pharyngeal arches and gill slits. d. The human coccyx forms from an embryonic tail.
The evolution of which of the following features of mammals is hardest to trace through the fossil record? a. Jaw structure b. Mammary glands c. Middle ear structure d. Development of hair
15. To what order do primitive mammals that lay eggs belong? A. Marsupials B. Craniata C. Monotremata D. Placental mammals 16. Large colonies of polyps belonging to class Anthrozoa secrete hard skeletons of time which later form A. sea aneores B. obellas C. corals D. jellyfish 17. When body parts are paired on either side of the body; this type of symmetry is called A. Dorso-ventral B. bilateral C. Radial D. dorsal
Which of the following statements about bilaterian animals is false? A. Many bilaterians are invertebrates but some are not. B. All bilaterians are triploblastic (have three germ layers). C. All bilaterians have bilateral symmetry. D. Most bilaterians have tissues but some do not.
The amniotes include all but the a. birds. c. mammals. b. reptiles. d. amphibians.