Answer:
Couplet
Explanation:
Taxonomic Key
A taxonomic is a tool used by scientists to identify and organism. It consists of a series of contradictory statements or questions that eventually lead to the classification of the organism. Choosing the appropriate option in each of the statements gives a detailed description of an organism's characteristics that help in its identification.
This pair of contradictory statements is called a couplet and each statement in a couplet is called a lead.
For a plant, the follow contradictory statements will be called a couplet:
1. Seed colour: Black
1. Seed colour: white
2. Plant height: Tall
2. Plant height: short
