Question

a series of choices between two characteristics that is used to identify organisms is called a

○ characteristic chart.
○ characteristic key.
○ dichotomous chart.
○ dichotomous key.

Explanation:

A dichotomous key is a tool used in biology (a subfield of Natural Science) to identify organisms. It presents a series of paired (dichotomous) choices between two characteristics at each step, narrowing down the identification. The other options: "characteristic chart" and "characteristic key" are not standard terms for this tool. A "dichotomous chart" is incorrect; the correct term is "dichotomous key" for this identification tool.

Answer:

D. dichotomous key