How do cnidarians ingest and digest food?
Cnidarians are carnivores, and some can also consume plant matter. They catch their food using their nematocysts or through filter feeding. Cnidarians digest their food using a primitive digestive system that contains no organs--they have a mouth (which also serves as the anus) and a gastrovascular cavity.
In cnidarian digestion typically occur extracellular. When does digestion occur intracellularly in cnidarians? Tentacles bring food the the mouth where it enters the gastrovascular cavity. Endodermal cells secrete enzymes and partial digestion occurs extracellularly.
- How do cnidarians obtain, ingest, and digest their food How do they get rid of undigested food? Cnidarians are carnivores that often use tentacles arranged in a ring around their mouth to capture prey and push the food into their gastrovascular cavity, where digestion begins.
- Even hydras, which are primitive, radially symmetrical cnidarians , show some degree of cephalization. They have a "head" where their mouth, photoreceptive cells, and a concentration of neural cells are located. Flatworms (phylum Platyhelminthes) are the most primitive animals with bilateral symmetry.
- The liver has multiple functions, but its main function within the digestive system is to process the nutrients absorbed from the small intestine. Bile from the liver secreted into the small intestine also plays an important role in digesting fat. In addition, the liver is the body's chemical "factory."
Updated: 19th September 2018