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**Dichotomous Key**

A. A dichotomous key is a tool that allows the user to determine the identity of items in the natural world based on the item's characteristics.

B. "Dichotomous" means "divided into two parts." Of Greek origin, dichotomous keys always give two distinct choices in each step, often opposites.

C. Who Can It Be Now?
Gru has an uncanny way of telling his minions apart, but can you? Use the dichotomous key below to find the names of Gru's minions.

Answer :

Final answer:

A dichotomous key is a tool used in biology to identify organisms based on their traits by presenting two distinct choices at each step. The process involves making successive decisions until the organism is accurately identified. This method is effective for helping to classify plants, animals, and other natural items.


Explanation:

Understanding Dichotomous Keys


A dichotomous key is a valuable tool used for identifying various items in nature based on their unique characteristics. This method is widely employed by taxonomists to classify organisms, such as plants or bacteria, making it easier to determine their identities.


The term "dichotomous" originates from the Greek word meaning "divided into two parts." Each step in a dichotomous key presents two distinct choices, which are typically opposites, allowing the user to narrow down their options until they find the correct identity.


How Dichotomous Keys Work


Using a dichotomous key involves a step-by-step process:



  2. Begin with a broad category of items or organisms.

  4. Look at the first question or characteristic, which will provide two choices.

  6. Choose the answer that fits the item in question and proceed to the next question based on that answer.

  8. Repeat the process until the item is identified.


An example of a dichotomous key might involve identifying trees based on their leaf type. At each step, you choose between two options, such as "leaves are broad" or "leaves are needle-like," guiding you closer to the tree's identity.



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