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Digestion
 
May I offer you
A sampling of our finest entree
Salt and plankton
In dazzling array
 
Would you like to know
The mode of digestion?
Just keep on reading
To answer the question
 

Due to their excessively primitive anatomy, the digestive process of porifera seems inferior. However, through further interpretation , it may be perceived as almost remarkable. Mother Nature compensated for the anatomical deficiencies of sponges through the conception of archaeocytes.  Sometimes,  food is transmitted to the sponge by algae or other organisms living within the sponge.  However, beyond a doubt, archaeocytes are one of the most fascinating features of sponges. They are also one of the primary body parts asscoiated with digestion. Due to ocean currents, water is absorbed through the same protocol implemented in respiration.  Currents create low pressure above the incurrent ducts (pinacocytes, porocytes, etc), and the water is drawn in. Once through incurrent ducts, microscopic particles are captured by the choanoflagellates. Surprisingly, these collared cells have been theorized to evolve from an almost insignificant division of protists. Water is subsequently conducted through canal systems and the osculum. Food that was extracted by the choanoflagellates is partially consumed by these cells in the proximity of the flagellates. However, to ensure the efficiency of the system, archaeocytes come into play. Archaeocytes are essential for the survival and prosperity of porifera. Without them, sponges would be even less complex and unable to survive. Inherently, archaeocytes may perform any plethora of tasks that is required of them from reproduction to growth to regeneration. In addition, they transport resources throughout the entire organism to enable its development. How do they do it? The world may never know!!