Answer :
A dichotomous key is called so because it presents a series of two opposite choices (dichotomies) at each step to classify and identify organisms.
A dichotomous key is a systematic tool used by biologists and taxonomists to identify and classify organisms based on their observable characteristics. It is designed as a series of paired statements or questions, where each pair represents two opposite characteristics of the organisms being studied. The user must choose the statement that best matches the observed characteristics of the specimen they are trying to identify.
At each step of the key, the user makes a choice between the two options, leading them to the next set of characteristics that narrows down the possibilities. This process continues until the user reaches a specific name or classification for the organism.
The term "dichotomous" comes from the Greek word "dichotomia," which means division into two parts. The key's structure of presenting two opposing choices at each step helps to simplify the identification process and efficiently categorize organisms into specific groups based on their shared characteristics.
Dichotomous keys are widely used in various scientific fields, including biology, botany, zoology, and ecology, to identify and classify organisms in a structured and organized manner. They are valuable tools for researchers, students, and anyone involved in the study of living organisms.
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Answer:
The name comes from the Greek “di” for “two” and “tome” for “cutting instrument.” As the name suggests, a dichotomous key arrives at the answer to species identification by presenting a series of questions with two possible answers.
Explanation:
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