WebSep 21, 2024 · Alternative B (figure 4) implies that the Porifera should have lost the extracellular digestion in a gut with the endoderm secreting the digestive enzymes, and ‘returned’ to feeding only on bacteria, which are digested intracellularly. WebThe word “Porifera” mainly refers to the pore bearers or pore bearing species. Based on the embryological studies, sponges are proved as animals and are classified into a separate …

Sponge - Wikipedia

WebMar 5, 2024 · Annelids live in a diversity of freshwater, marine, and terrestrial habitats. They vary in what they feed on and how they obtain their food. Earthworms are deposit feeders. They burrow through the ground, eating soil and extracting organic matter from it. Earthworm feces, called worm casts, are very rich in plant nutrients. WebAlthough most of the approximately 5,000–10,000 known species of sponges feed on bacteria and other microscopic food in the water, some host photosynthesizing microorganisms as endosymbionts, and these alliances often produce more food and oxygen than they consume. philip morris international inc + leadership

Porifera - Digital Atlas of Ancient Life

WebIn general, sponges feed by filtering bacteria from the water that passes through them. Some sponges trap roughly 90 percent of all bacteria in the water they filter. Other … WebWhy are knee surgeons excited about this breakthrough knee strap? Pinnacoderm (or dermal layer) -outercellular layer. Choanoderm - (or gastral layer) -inner cellular layer. … WebThe sponges maintain the coral reef biodiversity primarily by recycling vast amounts of organic matter to feed snails, crabs, and other creatures. Sponges recycle nearly ten times more matter than what the bacteria do, and they do also produce as much nutrition that all the corals and algae can combinely provide. philip morris international hiring