From species to kindom ;no. of common characters decreases.Where as from kingdom to species ;no. of common characters increases.●Remember the sequence:-->Domain->Kingdom->Phylum in case of animals/Division in case of plants->Class->Order->Family->Genera->Species

**Introduction:**
The taxonomic hierarchy is a system that classifies organisms into various levels based on their similarities and differences. These levels, from lowest to highest, include species, genus, family, order, class, phylum, kingdom, and domain. Each level represents a broader category of organisms, with the species being the most specific and the domain being the most general.

**Explanation:**
As we move from species to kingdom in the taxonomic hierarchy, the number of common characteristics may increase or decrease. This is because the classification of organisms is based on their shared characteristics, which can vary at different levels of the hierarchy.

1. **Species Level:** At the species level, organisms are classified based on their specific characteristics and the ability to interbreed and produce fertile offspring. Organisms within the same species share a high degree of similarity and have a large number of common characteristics.

2. **Genus Level:** Moving up to the genus level, organisms are grouped based on similarities in their physical characteristics and genetic makeup. Organisms within the same genus share fewer common characteristics compared to those within the same species. However, they still have several similarities that distinguish them from organisms in other genera.

3. **Higher Taxonomic Levels:** As we continue moving up the taxonomic hierarchy, the number of common characteristics between organisms decreases. At the family, order, class, phylum, and kingdom levels, organisms are classified based on broader similarities in their structure, physiology, and evolutionary relationships. While organisms within the same family or order may share certain characteristics, the number of common features decreases compared to lower taxonomic levels.

4. **Kingdom Level:** At the kingdom level, organisms are classified based on their overall similarities in basic cellular structure, mode of nutrition, and other fundamental characteristics. Organisms within the same kingdom share even fewer common characteristics compared to lower taxonomic levels. For example, organisms within the kingdom Animalia share basic characteristics such as multicellularity and heterotrophic mode of nutrition, but they can vary significantly in terms of body structure and other features.

**Conclusion:**
In conclusion, as we go from species to kingdom in the taxonomic hierarchy, the number of common characteristics may increase or decrease. The classification at each level is based on the overall similarities and differences between organisms, with lower taxonomic levels having a higher number of common characteristics compared to higher taxonomic levels.