Biology Now with Physiology

Biology

Quiz 14 :
The History of Life

Quiz 14 :
The History of Life

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Which kind of organism makes up the oldest fossil found on Earth?
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Answer:

C

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The first eukaryotes evolved approximately ________ years ago.
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Answer:

C

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The appearance of eukaryotes may have been delayed until more ________ accumulated in Earth's atmosphere.
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A

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If a plant evolved during the Permian period and spread across the continent of Pangaea,where might the fossils of this animal be found now?
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How was the distribution of humans (after they evolved)affected by continental drift?
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In a fictional movie set in a land dominated by flowering plants,advancing and retreating glaciers,and a cast that includes a human,a wooly mammoth,a saber-toothed cat,and dinosaurs,the ________ would be most out of place in the setting according to the geological time line of life on Earth.
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At the base of the evolutionary tree of all life is the ________ ancestor.
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Evolutionary tree diagrams representing the relationships between various organisms can be drawn only when those organisms share a
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In the evolutionary tree below,which of the nodes corresponds to the MOST recent common ancestor of troodontids,dromaeosaurids,and Archaeopteryx? img
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Evolutionary trees are based on
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Any two groups of organisms will have ________ most recent common ancestor(s).
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Monotremes,like the duck-billed platypus,are egg-laying mammals covered in hair,have mammary and skin glands,have three ear ossicles,are diphyodont,and possess dentary-squamosal jaw articulation.Marsupials,such as kangaroos and koalas,are pouched mammals that have a vertical tympanic membrane in addition to possessing characteristics observed in monotremes.Eutherians,such as humans,are placental mammals that have a vertical tympanic membrane in addition to possessing characteristics observed in monotremes. What one shared derived trait sets marsupials and eutherians apart from monotremes?
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Monotremes,like the duck-billed platypus,are egg-laying mammals covered in hair,have mammary and skin glands,have three ear ossicles,are diphyodont,and possess dentary-squamosal jaw articulation.Marsupials,such as kangaroos and koalas,are pouched mammals that have a vertical tympanic membrane in addition to possessing characteristics observed in monotremes.Eutherians,such as humans,are placental mammals that have a vertical tympanic membrane in addition to possessing characteristics observed in monotremes. What traits are shared derived traits for monotremes,marsupials,and eutherians?
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The ________ feature occurs between each branch on an evolutionary tree.
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The following numbered sets each represent a distinct group of organisms: (1)three toes per foot,cold-blooded,feathers,no finger adaptations (2)three toes per foot,warm-blooded,body hair,opposable thumbs (3)three toes per foot,warm-blooded,feathers,no finger adaptation (4)three toes per foot,warm-blooded,body hair,no finger adaptations Which of the following choices is the MOST likely to represent the order in which these groups would appear on an evolutionary tree,from oldest to most recent?
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The Cambrian explosion
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The Cambrian explosion occurred primarily in the oceans.The first challenges that had to be overcome during the mass colonization of dry land in the Ordovician period were
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During the Devonian period,plants evolved which of the following key innovations to overcome the harsh,dry conditions of life on land and flourish?
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The Cambrian explosion resulted in the evolution of more than 17,000 species of an animal known as the trilobite.The sheer number of trilobite fossils found in modern times suggests that trilobites were abundant,perhaps the rulers of the seas.Today,no living descendants of this group exist.What happened?
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According to the tree below,which of the following combinations of organisms are MOST closely related? img
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