As we go from species to kingdom in a taxonomic hierarchy, the number of common characteristics:
| 1. | Will decrease | 2. | Will increase |
| 3. | Will remain same | 4. | May increase or decrease |
The highest category for classifying living organisms in taxonomic hierarchy will be:
| 1. | Kingdom |
| 2. | Domain |
| 3. | Supraclass |
| 4. | Phylum for animals and Division for plants |