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A couplet in a key is...

A couplet in a key is

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Couplet is a pair of contrasting characters used as tool for identification key to help in identification of newly discovered organism.
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Each statement of couplet in the key is called_____

Read these statements about a taxonomic key. How many are false ? 1. A taxonomic key is based on the contrasting characters generally in a pair called a couplet . 2. It is generally analytical. 3. It is a taxonomic and used for identification of plants only. 4. Only accepted statement in the key is called a lead.

Which of the following are true with reference to taxonomical aids? 1. Separate taxonomic keys are requried for each taxonomic category. 2. Herbarium is a store house of collected plant and animal specimens. 3. Each statement in the key is called couplet. 4. Keys are used for identification purpose.

Key' is a taxonomical aid used for the identification of organisms. Each statement in key is called a _________.