A dichotomous key is a series of choices between alternative characteristics that is used to identify organisms. Check all features of a dichotomous key.

Choices are based on characteristics that are not easily observed or known.

There are usually two choices.

Typically, each choice can be answered “yes” or “no.”

Choices are ambiguous so that categories can include many species with different characteristics.

Respuesta :

The features of the dichotomous key are-

(1). There are usually two choices.

(2). Typically, each choice can be answered “yes” or “no.”

Dichotomous key is a tool that helps in identifying the organisms. It consists of a series of choices that lead to the correct identification of the given organism. "Dichotomous" means divided into two parts. Hence, dichotomous keys always give two choices in each step with answers which are either “yes” or “no”.

A dichotomous key provides the person with two statements describing certain characteristics. On selecting one, the person is provided with the next couplet choice and so on, till the identification is complete. The choices provided are easily observable characteristics of the organism without any ambiguity.

A dichotomous key includes the following features: there are usually two choices and typically, each choice can be answered “yes” or “no.”

What is a  dichotomous key?

A dichotomous key is a classification system used to classify by indicating the presence or absence of a particular phenotypic trait.

  • This system is used in biology to identify and classify different organisms.

  • The dichotomous key categorizes different taxa according to the presence of the observable phenotypic traits.

In conclusion, a dichotomous key includes the following features: there are usually two choices and typically, each choice can be answered “yes” or “no.”

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