Multiple Choice
The two-part format of the scientific name, referred to as binomial, ensures that __________.
25. Phylogeny
Phylogeny
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Species A and species B are in the same phylum. Species A and species C, but not species B, are in the same order. From this information you can conclude that __________.
A
species A and species B are in the same family
B
species B and species C share a less recent ancestor than do species A and B
C
all three species are members of the same genus
D
all three species are not members of the same phylum
E
species C could be in the same class as species A and B
Verified step by step guidance1
Understand the hierarchical classification system in biology, which includes levels such as phylum, class, order, family, genus, and species.
Recognize that species A and species B are in the same phylum, meaning they share a common ancestor at the phylum level.
Note that species A and species C are in the same order, indicating they share a more recent common ancestor than species A and species B, which are only in the same phylum.
Since species B is not in the same order as species A and C, species B could still be in the same class as species A and C, as class is a broader category than order.
Conclude that species C could be in the same class as species A and B, because class is a higher taxonomic level than order, allowing for the possibility of species C being in the same class as species A and B despite not being in the same order as species B.
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