Question

Hierarchy of categories of Carolus Linnaeus had categories except
a. Genus and species
b. Order and class
c. Kingdom and class
d. Phylum and family

Answer 1

Taxonomy is the classifying organisms and this classification divides the species into hierarchical system and this begins with the domain, where the domain is the point of origin of several organisms and this ends with species, and the arrangement of the categories also takes place in a manner that increases the specificity.

Complete answer:
- Taxonomic classification is also called Linnaean classification, where it got this name after the discovery by the scientist Carolus Linnaeus. Where all organisms are arranged in such a manner that was accepted internationally.
- Before the discovery of the Taxonomic hierarchy by Carolus Linnaeus the scientist had classified the organisms mainly into three different categories such as bacteria, Archaea and Eukarya and these categories are called domains and it is the point of origin of the organisms.
- According to that old classification, animals all come under the Eukarya, where these animals are divided into several categories called hierarchy of the classification.
- According to his book systema naturae, where Linnaeus was proposed three broad groups, called kingdoms.
- Where the kingdoms are mainly classified into 3 categories that are animals, plants, and minerals.
- Later Linnaeus divided the kingdoms into classes, further these Classes are divided into orders, and then into genus and at last species.
- But in modern classification, some categories are omitted from the list such as minerals.
- As we know the point of origin of the classification is a domain, as already there are 3 domains which were discussed above, and within these domains each of them are divided into categories that are kingdoms like Animalia and Plantae, fungi, etc.
- Again each kingdom has divided into phylum, and into class, family, order, genus and species.

Hence, the correct answer is option (D).

Note: To say simply all the hierarchy of the classification was started by Carolus Linnaeus, where it start from the origin such as domain to last one is species, but it does not include the phylum and family, where later in the modern classification it was added.