How are the animals of Phylum Porifera different to the the other 9 major phylums?

Answer 1

Animals of Phylum Porifera, commonly known as sponges, are distinct from the other nine major animal phyla in several key ways. They lack true tissues and organs, exhibiting a simple body structure made up of specialized cells that perform various functions, such as filtering water and obtaining nutrients. Unlike most other phyla, sponges are primarily sessile, meaning they remain fixed in one place, and they rely on a water flow system for feeding and respiration. Additionally, Porifera reproduce both sexually and asexually, a feature that is less common in many of the other phyla.