Question

How is the key useful in identification and classification?

Answer 1

Answer:

for categorizing each taxonomic rank such as family genus species etc...

different keys are used.

it is useful in identification of unknown organism

Answer 2

Hello Dost ☺

Answer :

Key is a taxonomical aid used for identification of plants and animals based on the similarities and dissimilarities.

The keys are based on contrasting characters generally in a pair called couplet. Selection of one character leads to rejection of another character while identifying a particular species or genera or family and so on.

For example presence or absence of hair on body can give a clue if an animal belongs to mammals or not.

Separate taxonomic keys are required for each taxonomic category such as family, genus and species for the purpose of identification.

Thanks ❤