Microbiology 9th Edition by Laura Black, Jacquelyn Black

تمرين 1

Which of the following is not a characteristic of a dichoto mous key?
(a) The dichotomous key has a "quartet" of statements de scribing the characteristics of organisms.
(b) Each statement is followed by directions to go to an other pair of statements until the name of the organism is identified.
(c) It is the most common type of key used by biologists to identify organisms based on their characteristics.
(d) Paired statements present an "either-or" choice so that only one statement is true.
(e) a and b.