Multiple Choice
Which of the following best describes the primary purpose of taxonomy in biology?
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1. Introduction to Biology
Introduction to Taxonomy
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There is (are) _____ eukaryotic domain(s).
A
three
B
one
C
four
D
two
Verified step by step guidance1
Understand the concept of biological domains: Domains are the highest taxonomic rank in the classification of life. There are three domains: Bacteria, Archaea, and Eukarya.
Focus on the eukaryotic domain: The Eukarya domain includes all organisms with eukaryotic cells, which have a nucleus and membrane-bound organelles.
Recognize that the question is asking specifically about the number of eukaryotic domains. Since Eukarya is the only domain that includes eukaryotic organisms, there is only one eukaryotic domain.
Eliminate the incorrect options: 'three,' 'four,' and 'two' are incorrect because they refer to the total number of domains or an incorrect count of eukaryotic domains.
Conclude that the correct answer is 'one,' as there is only one eukaryotic domain, Eukarya.
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