Phylogeny of Animal Digestive System

Paper Summary:

Presented in a graph form, this paper provides great detail about the digestive systems of the smallest of creatures in the "kingdom animalia." It explains how lysosome produces a digestive enzyme to breakdown bigger molecules of fat, protein, and carbohydrates, into simple protein, monosaccharides and fatty acid to send to cytoplasm for the cell's life, then converted into energy for cell growth.

From the Paper:

"The higher phyla, starting from Cnidaria develops extracellular digestive system as well as it develops into radial body symmetry. Cnidarian possess incomplete gastrovascular cavity, tube-like digestive system in which water and other smaller organisms are transported in. Such organism like hydra has digestive layer called gastrodermis, which excretes digestive enzymes to assimilate food. This system is also adapted by Platyhelminthes, which also has similar gastrovascular cavity, mouth without anus."

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