The term 'kingdom segments' is a reference to the taxonomic classification of living organisms known as PHYLA. PHYLA are the highest level of classification in the biological kingdom and are divided into smaller segments, such as classes, orders, families, genera, and species. Each Phylum is characterized by a set of shared characteristics that distinguish it from other PHYLA. For example, animals are classified into different PHYLA based on their body structure, such as vertebrates and invertebrates.