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Which of the following identifies the main purpose of biological taxonomy?
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1. Introduction to Biology
Introduction to Taxonomy
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Which of the following groups are classified as agnathans?
A
Salamanders
B
Lampreys
C
Sharks
D
Rays
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Understand the term 'agnathans': Agnathans are jawless fish, which are part of the superclass Agnatha. They are characterized by the absence of jaws and paired fins.
Identify the characteristics of each group listed: Salamanders are amphibians, not fish. Sharks and rays are cartilaginous fish with jaws, belonging to the class Chondrichthyes.
Recognize that lampreys are jawless fish: Lampreys are part of the class Petromyzontida, which falls under the superclass Agnatha, making them agnathans.
Eliminate the groups that do not fit the agnathan classification: Since salamanders, sharks, and rays have jaws or are not fish, they do not belong to the agnathan group.
Conclude that lampreys are the correct answer: Based on the characteristics of agnathans, lampreys are the only group listed that fits this classification.
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