Answer :
Answer:
A dichotomous key is complete when each organism stands alone is the correct answer.
Explanation:
Dichotomous key helps scientists and biologists to known the identity of the various unknown things present in a natural world such as mammals, trees, fish, rocks, reptiles.
This tool is used to recognize and classify an organism based on their characteristics and it helps to provide a correct name to an organism that differentiates the organism from the other objects.
The dichotomous key identifies the individual species, objects, or organism with its scientific name.
Final answer:
Among the provided options, the true statement about a dichotomous key is that it is complete when each organism can 'stand alone', or be identified independently. Dichotomous keys work by using a series of yes/no or similar paired questions, and do not create groups with no organisms.
Explanation:
A dichotomous key is a tool used in biology to identify and classify organisms based on their physical characteristics. This tool does not consider the temporary actions of an organism. So, the statement, 'A dichotomous key is based on the temporary actions of an organism' is incorrect. A traditional dichotomous key uses a series of yes/no or similar paired questions leading the user through to the identification of the organism. Therefore, the statement 'A dichotomous key may include a question that has three or more answers' is also incorrect.
A dichotomous key is used to sort and group organisms, so by definition, it should not be able to create a group with no organisms in it. As a result, the statement 'A dichotomous key may have a group with no organisms in it' is incorrect. Lastly, a dichotomous key is considered complete when each organism is identified independently, and can therefore 'stand alone'. So, the statement 'A dichotomous key is complete when each organism stands alone' is true and appropriate.
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