Question

Which best describes a dichotomous key?
Each step has two choices.
Each step can have any number of choices.
Each step describes two possible inferences.
Each step is based on genetic traits.

Answer 1

In a dichotomous key, in each step, u get 2 clues which describe something and help towards finding a single answer for both clues respectively.
So, the Ans may be (b)

Answer 2

Let me try to answer this;

• IN  a dichotomous key each step describe two possible inferences. whereby this means that their is only one choice to be chosen from the two provided inferences.

1. For example 1. the leaves have smooth margin

the leaves have serrated margins.

from the two one has to choose one among the two provided.