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Explain how digestion and absorption in a gastrovascular cavity differs from digestion and absorption of nutrients...

Explain how digestion and absorption in a gastrovascular cavity differs from digestion and absorption of nutrients in an alimentary canal.

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The gastrovascular cavity is defined as an empty space that is surrounded by tissue. It is in this cavity that food is brought. The tissue which surrounds the cavity is responsible to secrete enzymes to enable digestion. After digestion, nutrients are then absorbed by the cells surrounding this cavity and are circulated to the rest of the organism through diffusion. The organisms which possess a gastrovascular cavity are extremely simple and are made up of only a few tissues.

A complete digestive tract, with an alimentary canal, is a more advanced system. It consists of a tube with a mouth at one end and an opening for excretion at the other. Moreover, there are many organs like stomach for digestion of food, intestines for absorption, blood for circulation to the rest of the body.

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