Question

3. If two different people use the same dichotomous key to identify the same organism, should they have different results? Explain.

Answer 1

Not unless one of them made a mistake? Dichotomous keys should be "mutually exclusive" - there shouldn't be any room where subjective observations can mess up the process. Assuming the two people followed the key correctly and made accurate observations, they should both arrive at the same classification.

Answer 2

kma230 is correct