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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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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.
Do humans have a gastrovascular cavity?
No, humans do not have a gastrovascular cavity. Instead, they have a more complex digestive system that includes organs such as the stomach, small intestine, and large intestine for processing food and absorbing nutrients.
What invertebrate has a gastrovascular cavity?
The hydra is a classic example. See link below for more information.
Is gastrovascular cavity of dugesia a simple sac?
No, the gastrovascular cavity of Dugesia is not a simple sac. It is a more complex structure that serves both as a digestive chamber and a circulatory system. This cavity has branches that allow for the distribution of nutrients and removal of waste throughout the organism.
Does a perch have a gastrovascular cavity or a complete digestive tract?
A perch has a complete digestive tract, which includes a mouth, esophagus, stomach, intestine, and anus. This structure allows for more efficient digestion and nutrient absorption compared to organisms with a gastrovascular cavity.
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 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 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 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.
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.
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.
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
Does a gastrovascular cavity have two openings?
no, theres one opening
