WebThe invertebrates, or Invertebrata, are animals that do not contain bony structures such as the cranium and vertebrae. The simplest of all the invertebrates are the Parazoans, which include only the phylum Porifera. Phylum Porifera ("pori" = pores, "fera" = bearers) are popularly known as sponges. Sponge larvae are able to swim; however, adults ... Webone of the flattened cells which comprise the outer surface and which can be expanded or contracted at their margins to allow the whole animal to alter its size slightly syconoid a …

How do sponges breathe? - UCSB Science Line

WebMar 13, 2010 · How does a sponge excrete? Wiki User ∙ 2010-03-13 21:33:15 Study now See answer (1) Best Answer Copy A sponge has carbon dioxide and other wastes removed as the water moves in and out through... WebIn most unicellular organisms, excretion is a simple process of diffusion into the surrounding medium. In other organisms, contractile vacuole may also help in excretion. In sponges and coelenterates, waste is diffused through epidermal cells to the surrounding water or into the canals and through gastro vascular cavity by the en- dothermal cells. curly hem

Sponges: The Simple Animals That Live In Salt Water

WebNov 20, 2024 · In order obtain food, sponges pass water through their bodies in a process known as filter-feeding. Water exits through larger pores called excurrent pores. As it … WebAs the leaves age, the cells grow in size since more water is needed to dilute the accumulating salt. This hoarding of water creates thick and fleshy leaves, a characteristic called succulence. Eventually, the leaves age and … WebSponges are primarily filter feeders. They lack respiratory organs and excretion occurs through the oscula and the surface of the sponge. A primitive system of coordination exists. They produce substances with antibiotic activity. Sponges probably arose from flagellated … curly heaven hair