Biology 108 Practice Questions With
Complete Solution
The legless condition that is observed in several groups of extant
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reptiles is the result of
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A) their common ancestor having been legless.
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B) a shared adaptation to an arboreal (living in trees) lifestyle.
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C) several instances of the legless condition arising independently of
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each other.
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D) individual lizards adapting to a fossorial (living in burrows) lifestyle
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during their |
lifetimes. - CORRECT ANSWER✔✔-C
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The scientific discipline concerned with naming organisms is called
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A) taxonomy.
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B) cladistics.
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C) binomial nomenclature.
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D) systematics.
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E) phylocode - CORRECT ANSWER✔✔-A
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, The various taxonomic levels (viz, genera, classes, etc.) of the
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hierarchical classification system differ from each other on the basis of
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A) how widely the organisms assigned to each are distributed
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throughout the environment. | |
B) the body sizes of the organisms assigned to each.
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C) their inclusiveness.
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D) the relative genome sizes of the organisms assigned to each.
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E) morphological characters that are applicable to all organisms. -
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CORRECT ANSWER✔✔-C |
A phylogenetic tree that is ʺrootedʺ is one
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A) that extends back to the origin of life on Earth.
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B) at whose base is located the common ancestor of all taxa depicted on
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that tree.
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C) that illustrates the rampant gene swapping that occurred early in
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lifeʹs history. |
D) that indicates our uncertainty about the evolutionary relationships of
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the taxa
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depicted on the tree. | | |
E) with very few branch points. - CORRECT ANSWER✔✔-B
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Complete Solution
The legless condition that is observed in several groups of extant
| | | | | | | | | | |
reptiles is the result of
| | | |
A) their common ancestor having been legless.
| | | | | |
B) a shared adaptation to an arboreal (living in trees) lifestyle.
| | | | | | | | | |
C) several instances of the legless condition arising independently of
| | | | | | | | | |
each other.
|
D) individual lizards adapting to a fossorial (living in burrows) lifestyle
| | | | | | | | | | |
during their |
lifetimes. - CORRECT ANSWER✔✔-C
| | |
The scientific discipline concerned with naming organisms is called
| | | | | | | | |
A) taxonomy.
|
B) cladistics.
|
C) binomial nomenclature.
| | |
D) systematics.
|
E) phylocode - CORRECT ANSWER✔✔-A
| | | |
, The various taxonomic levels (viz, genera, classes, etc.) of the
| | | | | | | | | |
hierarchical classification system differ from each other on the basis of
| | | | | | | | | |
A) how widely the organisms assigned to each are distributed
| | | | | | | | | |
throughout the environment. | |
B) the body sizes of the organisms assigned to each.
| | | | | | | | |
C) their inclusiveness.
| |
D) the relative genome sizes of the organisms assigned to each.
| | | | | | | | | |
E) morphological characters that are applicable to all organisms. -
| | | | | | | | | |
CORRECT ANSWER✔✔-C |
A phylogenetic tree that is ʺrootedʺ is one
| | | | | | |
A) that extends back to the origin of life on Earth.
| | | | | | | | | |
B) at whose base is located the common ancestor of all taxa depicted on
| | | | | | | | | | | | |
that tree.
| |
C) that illustrates the rampant gene swapping that occurred early in
| | | | | | | | | | |
lifeʹs history. |
D) that indicates our uncertainty about the evolutionary relationships of
| | | | | | | | |
the taxa
| |
depicted on the tree. | | |
E) with very few branch points. - CORRECT ANSWER✔✔-B
| | | | | | | |
