Respuesta :
An alimentary canal is a tube with openings at both ends, whereas a gastrovascular cavity only has one opening that serves as both an entrance and an exit.
The food we eat is broken down by the digestive system into small pieces so that we can use it as fuel and get the nutrients we need to live. Amino acids come from protein, simple sugars come from carbohydrates, and fatty acids and glycerol come from fats.
The cells that surround the digestive compartments in gastrovascular cavities only have one opening, which serves as both the entrance for food (similar to a mouth) and the exit for waste (similar to an anus). This method of digestion is utilized by Platyhelminthes (flatworms), Ctenophora (comb jellies), and Cnidaria (coral, jellyfish, and sea anemones).
The digestive tube known as the alimentary canal or digestive tract has two distinct openings: one at the mouth and the other at the anus. Food can be processed more effectively if it moves in only one direction. Earthworms are an illustration of a creature with an alimentary canal.
To learn more about the alimentary canal, refer:-
https://brainly.com/question/28385626
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