How did Carl Linneaus’s original classification system differ from today?

O He was a botanist, so he only classified plants.

O He did not consider how organisms may be related to one another.

O He did not classify all the way down to the species level.

O He only had two kingdoms, animals and plants.

The correct answer is: O He only had two kingdoms, animals and plants.

Carl Linnaeus, a Swedish botanist, is known for his contributions to the development of the modern classification system. In his original classification system, he categorized organisms into two broad kingdoms: the animal kingdom and the plant kingdom. This system was based mainly on the physical characteristics of organisms.

However, modern classification systems have evolved significantly since Linnaeus's time. Today, we use a more complex and detailed system called the Linnaean hierarchy, which includes several levels of classification, including kingdom, phylum, class, order, family, genus, and species.

Furthermore, Linnaeus did not consider the concept of an evolutionary relationship between organisms in his original system. This means that he did not take into account how closely related organisms may be to one another or their common ancestry. In contrast, modern classification systems, influenced by the theory of evolution, aim to reflect the evolutionary relationships between organisms through the use of phylogenetic trees.

In summary, while Linnaeus made significant contributions to the development of the classification system, his original system differed from the modern system in that he only recognized two kingdoms (animals and plants) and did not consider the concept of evolutionary relationships between organisms.