Question

Couplet represents the choice made between two opposite options which results in

• A. rejection of both options
• B. acceptance of both options
• C. either acceptance or rejection of both options
• D. acceptance of only one and rejection of the other

Answer 1

The correct option is D acceptance of only one and rejection of the other

Couplet is a pair of leads in a taxonomic key. It provides a choice to be made between two contrasting characters which results in acceptance of only one and rejection of the other.