Why is digestion in hydras considered extracellular?
1 Answer
Feb 14, 2017
Digestion in hydra is first extracellular, then intracellular.
Explanation:
Hydra is a member of Phylum Cnidaria, included under a group of organisms called COELENTERATA .
Coelenteron is the body cavity of diploblastic organism hydra. Food enters in coelenteron, also termed gastrovascular cavity. Digestion starts inside this cavity but only incomplete breakdown of food takes place here.
Small semidigested food particles are then taken inside cells lining gastrovascular cavity and digestion is completed inside cellular food vacuoles.
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