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:
deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) synonyms: dichromasy, dichromatism, dichromatopsia, dichromia.
Any place where there are living organisms
Men have testicles, and a scrotum. Women have ovaries, uterus and a vagina. Also women have wider pelvises than men so that they can have children.
