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Q.

Which of the following are true regarding taxonomical aid named “key” ?

a)  They are based on similarities and dissimilarities

b) They are analytical in nature

c) They are based on contrasting characters in pair called couplet

d) Same key is used for all taxonomic categories

 e) Each statement in the key is called lead

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a

All are correct except e

b

All are correct except a

c

All are correct except d

d

All are correct except b

answer is C.

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Detailed Solution

Different keys are used for different taxonomic categories.

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