The statement, "There are holes or 'pores' all over the body. They are commonly called sponges, and are mainly found in marine habitats," refers to which phylum?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Porifera.
The statement refers to the phylum Porifera, commonly known as sponges. Poriferans are simple, multicellular organisms characterized by numerous pores or "ostia" through which water flows, aiding in filter feeding. These organisms primarily inhabit marine environments, though some species are found in freshwater. Lacking true tissues or organs, sponges have specialized cells that perform various functions, such as maintaining water circulation and capturing food particles. Porifera is among the most primitive animal phyla, showcasing early evolutionary simplicity.