How is a key helpful in …
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Posted by Rohit Kumar 1 year, 11 months ago
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Preeti Dabral 1 year, 11 months ago
Keys are pairs of two contrasting characters. 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 mammalian or not.
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