Which one of the following is a taxonomic aid for identification of plants and animals based on similarities and dissimilarities :
A
Flora
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B
Keys
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C
Monographs
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D
Catalogues
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Solution
The correct option is B Keys
Keys help in identification of plants and animals. In a key there are two opposite terms that form a couplet. If one is selected the other automatically is rejected. The key follows this pattern till a set sequence of taxa is reached.