What is true for both incomplete and complete digestive systems?

Answer 1

An incomplete digestive system (found in certain lower invertebrates like Cnidarinas, i.e. hydra, marine jellyfish, and Platyhelminthes, i.e. flatworms) is where a single opening to a pouch-like cavity serves as both mouth and anus. A complete digestive system (all insects have them) means that food processing occurs within a tube-like enclosure, the alimentary canal, running lengthwise through the body from mouth to anus.

Answer 2

The difference is that an incomplete digestive system is a complete one looks like this: However, as this picture shows an incomplete system, either he appendix and other parts are in other places, or missing some features of the related digestion!

Answer 3

A complete digestive system has a separate mouth and anus, while an incomplete digestive system has a unified mouth and anus and a gastrovascular cavity.

Answer 4

There is one opening that serves as both mouth and anus

Answer 5

Digestion begins outside the cells

Answer 6

Hydra