Answer :

Hansika
Key is another taxonomical aid that helps in identification of plant and animalThese keys are based on similarities and dissimilarities in characters
generally in a pair called couplet
Each statement in a taxonomic key isreferred to as a lead.
 It is also useful in identification of unknown organisms.

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✔️ Key is a taxonomical aid that helps in identification of plant and animal species.

✔️ These keys are based on similarities and dissimilarities in characters, generally in a pair called couplet.

✔️ Each statement in a taxonomic key is referred to as a lead.

✔️ For categorizing each taxonomic rank, such as family, genus, species, etc., different keys are used. It is also useful in identification of unknown organisms.

✔️ Keys are of two types- indented and bracketed keys.

✔️ Indented key provides a sequence of choices between two or more statements while in bracketed key, a pair of contrasting characters are used.

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