In taxonomic hierarchy, various categories are arranged in …... series.

Explanation

**Step-by-Step Solution:**

1. **Understanding Taxonomy**: Taxonomy is the branch of biology that deals with the naming, identification, and classification of organisms. It is essential for organizing the vast diversity of life forms.

2. **Defining Taxonomical Hierarchy**: Taxonomical hierarchy refers to the systematic arrangement of organisms into successive levels of classification. This hierarchy helps in organizing organisms based on shared characteristics.

3. **Levels of Taxonomical Hierarchy**: The taxonomical hierarchy consists of several ranks, which are arranged from the broadest to the most specific. The main levels are:
- Kingdom
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