Question

How is a dichotomous key used?

a.The organism is compared to paired pictures of organisms until a match is found in the key.
b.The organism’s DNA is sequenced and compared to the DNA sequences that are listed in the dichotomous key.
c.Observable characteristics of the organism are checked through a sequence of two-part steps until an identification is listed in the key.
d.Observable characteristics of the organism are listed in a group and compared to different groups of observable characteristics listed in the key.

Answer 1

A dichotomous key is a tool that helps to identify an unknown organism. A dichotomous key is a series statements consisting of 2 choices that describe characteristics of the unidentified organism.

Answer 2

c.Observable characteristics of the organism are checked through a sequence of two-part steps until an identification is listed in the key.

Step-by-step explanation:

Dichotomous key is the term used to describe a method of identifying living beings, such as identifying a species of butterfly that we are observing, for example. This method is composed of a step key that gives two answer options, which someone follows until reaching the result. In other words, a dichotomous key allows the observable characteristics of an organism to be verified through a sequence of steps in two parts until an identification is listed in the key.