Key is a taxonomic aid for the identification of specimens. Each statement in the Key is called a?

The correct option is A

Lead

The correct option is A.

Explanation for the correct option:

Option A:

1. A key is a taxonomic aid used to identify plants and animals based on similarities and differences.
2. The keys are based on contrasting characters in a pair known as a couplet.
3. It represents the decision between two opposing options, with only one accepted and the other rejected.
4. Each statement in the key is referred to as a lead.
5. For identification purposes, separate taxonomic keys are required for each taxonomic category such as family, genus, and species.

Explanation for the incorrect options:

Option B:

The contrasting characters in a pair are referred to as a “couplet.”

Final answer:
Key is a taxonomic aid for the identification of specimens. Each statement in the Key is called a Lead.