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CH 21 Quiz

Quiz by Tiffany

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70 questions
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  • Q1
    The Earth is estimated to be how old?
    4.65 billion years old
    5.55 billion years old
    4.55 billion years old
    5.65 billion years old
    60s
  • Q2
    The oldest fossils are how old and what do they resemble?
    3.5 billion years old and resemble modern cyanobacteria
    4.5 billion years old and resemble modern cyanobacteria
    2.5 billion years old and resemble modern cyanobacteria
    4.5 billion years old and resemble modern Amoebozoa
    120s
  • Q3
    By studying the similarities and differences among species, biologists can construct a _______________, the evolutionary history of a species of group of species
    cladogenesis
    phylogeny
    clade
    anagenesis
    60s
  • Q4
    What is the purpose of a phylogenetic tree?
    describing evolutionary relationships between multiple species. It is viewed as a hypothesis because is not static. Things change as more information becomes available.
    Researchers identify homologous features that are shared by some species but not by others, which allows the grouping of species based on shared similarities.
    contains groups of species with different common ancestors
    contains a common ancestor but not all of its descendants
    120s
  • Q5
    Complete the statement. New species are commonly formed by ____________.
    anagenesis
    Cladogenesis
    120s
  • Q6
    What is this the definition of? A species diverges into TWO or more species.
    anagenesis
    cladogenesis
    120s
  • Q7
    What is this the definition of? A single species evolved into a different species
    cladogenesis
    anagenesis
    45s
  • Q8
    What is a clade?
    Question Image
    A common ancestral species and all of its descendant species
    A common ancestral species and some of its descendants
    120s
  • Q9
    A ___________ is a taxon that is a clade.
    monophyletic group
    banana
    monkey
    pineapple belongs on pizza (; I'm bias sorry
    120s
  • Q10
    What is the definition of something that is monophyletic?
    common ancestor and all the descendants
    contains a common ancestor but not all of its descendants
    contains groups of species with different common ancestors
    120s
  • Q11
    What is the definition of something that is paraphyletic?
    contains groups of species with different common ancestors
    contains a common ancestor but not all of its descendants
    common ancestor and all the descendants
    120s
  • Q12
    What is the definition of something that is polyphyletic?
    common ancestor and all the descendants
    contains a common ancestor but not all of its descendants
    contains groups of species with different common ancestors
    120s
  • Q13
    Which is monophyletic? First one or second one?
    Question Image
    Second picture on the right
    First picture on the left
    120s
  • Q14
    What is this a picture of?
    Question Image
    paraphyletic
    monophyletic
    polyphyletic
    60s
  • Q15
    What grouping is this? Look very closely...
    Question Image
    monophyletic
    paraphyletic
    sympathetic
    polyphyletic
    120s

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