Question

a pair of contrasting character in keys is called?
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Answer 1

Answer: Couplet

Explanation: Keys are based on the contrasting characters generally in a pair called couplet. It represents the choice made between two opposite options.

Answer 2

Data that are different from each other are known as contrasting characters.

• To distinguish different groups of plants and animals keys are used.

• Based on the key user directs to the results.
• The set of commands or statements helps to identify the organism type.
• The Couplet is the different characters that appeared in the key used for identification.
• Hence, the set of different characters in keys is known as a Couplet.
• This key helps users to identify any species based on the results of the question the key asked.