Work Step by Step
We can rule out options a. and b. because we cannot determine, by name only, that the species in question is a plant or an animal. Option c. is incorrect because Nigricans is the species name, not the genus name. Option d. is correct. We know that in the system of binomial nomenclature, scientists give species two names: the first is the name of the genus, and the second name is the name of the species. According to this naming system, Rhizopus is the genus, and nigricans is the name of the individual species within that genus.