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What are keys, manuals and Couplets in the chapter living world?

What are keys, manuals and Couplets in the chapter living world?

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1 Answers

Arun
25763 Points
3 years ago
A key is a device, which when properly constructed and used, enables a user to identify an organism. Keys are devices consisting of a series of contrasting or contradictory statements or propositions requiring the identifier to make comparisons and decisions based on statements in the key as related to the material to be identified.

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