Question

What is a dichotomous key? A couplet? A lead?

   What is a dichotomous key? A couplet? A lead?

Plant Systematics

Plant Systematics

Michael G. Simpson 2nd Edition

Chapter 1, Problem 17

Instant Answer

Solved by Expert Ankit Gupta

08/21/2020

Step 1

A dichotomous key is a tool that allows the identification of organisms or objects in the natural world. It consists of a series of choices that lead the user to the correct name of a given item. Each step in the key provides two contrasting options, leading to Show more…

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What is a dichotomous key? A couplet? A lead?

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Key Concepts

Dichotomous Key

A dichotomous key is a scientific tool used to identify and classify organisms or items by offering a series of choices that lead the user to the correct name or classification. Each step in the key presents two contrasting characteristics and directs the user based on a decision process until the final identification is reached.

Couplet

In the context of dichotomous keys, a couplet is a pair of contrasting statements or descriptions that offer a choice between two observational characteristics. Each couplet guides the user to a subsequent couplet or to an identification, with each choice narrowing down the possibilities based on the organism's traits.

Lead

In a dichotomous key, a lead refers to the instruction or pathway provided at the end of a couplet. It directs the user either to another pair of choices or to the final species identification, effectively acting as a link or pointer within the decision-making process.

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