Question

how is key helpful in identification and classification of an organism??

Answer 1

key is very important term in classification and identification by this  aid we establish or find the exact position of the organism by their morphological basis here key has a couple of question about  present or similarity and absent or dissimilarity to find the taxon in table .

Answer 2

nodule of the list of alternate and analytical taxonomic aid for  characters  which helps in identification of the organism to which taxon it belongs to their  matching or mismaching features . there is along chain of question i.e. yes/no type which leads toward the different taxa .