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The sac like gut or gastrovascular cavity of cnidarians has?
MasterShrimp
A) Only one opening: they expel undigested material through the mouth.
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∙ 12y ago
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What is an cnidarian gut?
Cnidarians have no gut in their body .The structure which performs function similar to gut is called gastrovascular cavity .
Do cnidarias have a complete gut?
No ,they lack gut but possess gastrovascular cavity .
What animal has a lined gut cavity?
Earthworms have a lined gut cavity called the intestine. This structure is responsible for nutrient absorption and waste elimination in earthworms.
Why is a complete gut more efficient than a gastrovascular cavity?
A complete gut allows for unidirectional movement of food through specialized regions like the stomach and intestines, aiding in digestion and absorption of nutrients more efficiently. In comparison, a gastrovascular cavity has a single opening for both ingestion and excretion, limiting the ability to digest food as thoroughly. This makes a complete gut more efficient for nutrient acquisition and waste removal in more complex organisms.
Having a true coelom distinquishes cnidarians from sponges?
That is not accurate. Cnidarians actually have a simple coelom called a gastrovascular cavity, which functions in digestion and circulation. Sponges, on the other hand, lack a true coelom and instead have a porous body filled with channels for water circulation.
Cnidarians are also called Coelenterates because they have?
Cnidarians are also called Coelenterates because they possess a central cavity or coelenteron that serves various functions, including digestion and waste removal. This cavity is a defining feature of this group of animals and gives them their alternate name.
Is there a presence of a through gut in porifera?
No. Porifera and Cnidarians lack a through gut.
Does chordata have a coelom?
Some chordates have them, and in some the distinction may need to be qualified. In molluscs they remain undifferentiated, in mammals for example they differentiate into separate cavities, the pleural, peritoneal and pericardial.
What characteristics gives cnidarians their name?
The characteristic that gives cnidarians their name is: cnidarian means "nettle" and nettles are plants that release stinging barbs into the skin. All cnidarians have stinging cell's. Cnidarians have complex tissues, a gut for digesting food, and a nervous system.
What is the definition Gastroderm?
The gastroderm is the inner layer of cells that lines the gut or digestive cavity of cnidarians such as jellyfish and corals. It is involved in digestion, absorption of nutrients, and in some cases, defense mechanisms.
What is the difference between a gut and body cavity?
A gut is the internal digestive tract of an organism, while a body cavity is a fluid-filled space within the body that contains and protects organs. The gut is a specific organ system responsible for digestion, while body cavities serve a more general protective function.
How do you define archenteron?
The cavity of a gastrula forming a primitive gut.
