Introduction š¹ The kingdomĀ AnimaliaĀ consists ofĀ multicellularĀ organisms that are classified based on theirĀ levels of organization, body symmetry, and coelom (body cavity).š¹ This classification helps in understandingĀ structural complexity, evolutionary relationships, and functional adaptationsĀ in different animal groups. Classification of Animalia Based on Structural Complexity [ā¦]