Multiple Choice
Which of the following is NOT an example of a single species on Earth?
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1. Introduction to Biology
Introduction to Taxonomy
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When using a dichotomous key in taxonomy, where should you always begin?
A
At any random point in the key
B
At the first step or question of the key
C
At the last step of the key
D
With the most familiar organism
Verified step by step guidance1
Understand the purpose of a dichotomous key: It is a tool used in taxonomy to identify organisms based on a series of choices that lead to the correct identification.
Recognize that a dichotomous key is structured as a sequential series of questions or steps, each offering two choices (hence 'dichotomous').
Begin at the first step or question of the key, as this is designed to guide you systematically through the identification process.
Follow each step carefully, making observations about the organism and choosing the option that best matches its characteristics.
Continue through the key step by step until you reach the final identification of the organism. Avoid skipping steps or starting at random points, as this can lead to incorrect identification.
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