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A planarian's gastrovascular cavity serves multiple functions, primarily digestion and nutrient distribution. It has a branched structure that allows for the even distribution of nutrients throughout the body. The cavity also plays a role in the excretion of waste products. By having a single opening for both food intake and waste expulsion, planarians efficiently manage their digestive processes.

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2mo ago

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How does a planarian despose of waste?

Food first passes through the mouth into the gastrovascular cavity where it is digested after which waste products exit through the same opening.


What is the feeding sturcture of a planarian?

They have a mouth ventrally located in the middle of their body connected to a pharynx and a gastrvascular cavity. Their food is digested by enzymes and glides through their mouth and pharynx to the gastrovascular cavity which is somewhat a primitive stomach that delivers nutrients all over the body.


What is a gastrovascular cavity?

A gastrovascular cavity is a digestive chamber with a single opening, found in simple animals like jellyfish and flatworms. Food is ingested through the opening, where it is broken down and absorbed by the cells lining the cavity. Waste is expelled through the same opening.


What is the tissue that lines the gastrovascular cavity?

The tissue that lines the gastrovascular cavity in organisms like cnidarians is called gastrodermis. It is responsible for digestion and absorption of nutrients from the food.


Is a planarian acoelomate pseudocoelomate or educoelomate?

A Planarian is an acoelomate, meaning they do not have a body cavity at all.


Explain how feeding and digestion occur in planarians?

A planarian is a non parasitic flatworm commonly found in ponds and rivers. Digestive enzymes are secreted from their mouth, then the pharynx moves the food to the gastrovascular cavity, where nutrients diffuse to the rest of the body.


Is a gastrovascular cavity a digestive tract with two openings - a mouth and anus?

No, a gastrovascular cavity only has one opening. Only an alimentary canal features a mouth and anus.


One difference between a gastrovascular cavity and a complete digestive tract?

A gastrovascular cavity is a digestive sac with only a single opening. A complete digestive tract (otherwise known as an Alimentary canal) has two openings (a mouth and anus) between its digestive tubes unlike the gastrovascular cavity in which food is ingested and eliminated through the same opening (example would be hydra)


A digestive chamber with one opening is called?

gastrovascular cavity


What is the space inside coelenterates?

It is called the Coelenteron or gastrovascular cavity.


What is the space inside a cnidarians body termed?

gastrovascular cavity


What is the space inside a cnidarians body called?

gastrovascular cavity