in biology key is one kind of taxonomical aid which help in classification of different plants and animals on the basis of their similarities and dissimilarities. the contrasting character in the key is called couplet and each statement in the key is called lead
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in biology key is one kind of taxonomical aid which help in classification of different plants and animals on the basis of their similarities and dissimilarities. the contrasting character in the key is called couplet and each statement in the key is called lead