A dichotomous key is defined as a biological tool for identifying unknown organisms to a particular taxonomic level. It is constructed with many levels and series of couplets.
So, by observing the given dichotomous key, it is concluded that the correct answer is Option A- Organism X and Z have at least one observable trait in common in this dichotomous key.
Answer:
the first one is plants
the second one is animals
the third one is plants
the fourth one is animals
Monday 2pm, since it was forecasted to make landfall at that time