Question

How is a key helpful in the identification and classification of an organism?

Answer 1

key is an analytical taxonomic aid which is based upon dissimilar characters and a pair of dissimilar characters is called couplet and each statement is called lead

Answer 2

Hello!!

_________________________________

$\Huge{\mathfrak{\green{\underline{answer}}}}$

✔️ 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.

_________________________________

Thanks!!