What is the term given to the groups of organisms arranged at different levels of classification?

Which of the following represents the order of a horse?

The first act in taxonomy is

Select the option that shows the correct sequence of taxonomic categories:

Genus is a category which comes in between the

Identify the correct terms for the following statements:
$(i)$ The science of classifying all organisms into different taxa based on their characteristics.
$(ii)$ The system of naming organisms following specific rules.
$(iii)$ The branch of science that includes the study from populations to the biosphere.
$(iv)$ The structure formed by the combination of all taxonomic categories.