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Each statement of the key is calle...

Each statement of the key is calle

A

Couplet

B

Taxon

C

Lead

D

Category

Text Solution

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The correct Answer is:
### Step-by-Step Text Solution: 1. **Understanding the Question**: The question asks what each statement of a key is called in the context of taxonomy. 2. **Defining a Taxonomic Key**: A taxonomic key is a tool used for the identification of organisms based on their characteristics. It helps in distinguishing between different species by providing a series of choices that lead to the correct identification. 3. **Identifying the Options**: The options provided are: - Couplet - Exon - Lead - Category 4. **Analyzing Each Option**: - **Couplet**: This refers to a pair of contrasting statements used in keys. It is not the term for each individual statement but rather a pair. - **Exon**: This term is related to genetics and refers to a segment of DNA that codes for a protein. It is not relevant in the context of taxonomic keys. - **Lead**: This is the correct term. Each statement in a taxonomic key that guides the user in making a choice is called a lead. - **Category**: This refers to a classification unit in taxonomy (like kingdom, phylum, class, etc.) and does not pertain to the statements in a key. 5. **Conclusion**: Based on the analysis, the correct answer to the question "Each statement of the key is called" is **Lead**.
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