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Taxonomic key is one of the taxonomic to...

Taxonomic key is one of the taxonomic tools in the identification and classification of plants and animals. It is used in the preparation of  

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Key is taxonomical aid used for identification of plants and animals based on the similarities and dissimilarities.
The keys are based on the contrasting characters generally in a pair called couplet.
It represents the choice made between two opposite options.
This results in acceptance of only one and rejection of the other.
Each statement in the key is called a lead.
Separate taxonomic keys are required for each taxonomic category such as family, genus and species for identification purposes.
Keys are generally analytical in nature.
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