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yes, planarians have one opening in their digestive system
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∙ 14y ago
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What is a digestive system with only one opening called?
A digestive system with only one opening is called an incomplete digestive tract. Organisms with this type of digestive system ingest food and eject waste through their mouth.
What disadvantages to a one opening digestive system?
in a one opening digestive system the organism must wait for the food to be released before consuming new foods.
Why is a two opening digestive system more effective than a one opening digestive system?
if i got this right snakes are the only one opening animals and have to puke their food after digestion while two opening animals like us just get rid of the waste the way we do.
Does an oyster have a one-way or two-way digestive system?
Oysters have a two way digestive system. This means that they only have on opening for both food to go in and to come out.
What are the disadvantages of a flatworm's digestive system having only one opening?
They cannot eat continuously (there mouth and anus are present in the same opening)
What organism has a saclike digestive system?
Parasites such as tapeworm, planarian and live fluke have digestive systems that are saclike. Their digestive tracts have one opening and they live inside a host animal.
What is an open digestive system?
An open digestive system is one where there is an entrance "mouth" in one end of the organism and an "exit" or anus of some sort in the other end of the organism. (think of worms or people). A closed digestive system is in something like a hydra or anemone where there is just one cavity and one opening that acts as both mouth and anus.
What is Sac filled with digestive chemicals?
The stomach
Do bats have a 2 way digestive system?
No bats have a one way digestive system. Food goes in the mouth, is digested, and comes out the other end. In two way digestive systems food is taken in and waste is excreted through the same opening.
Which organism uses the same opening for ingestion and egestion?
Organisms that have only one opening in their digestive tract through which food enters and waste exits are known as having an incomplete digestive system. Some organisms with incomplete digestive systems are jellyfish, sea anemones, flatworms, and corals.
What is one disease that affects the digestive system?
one disease of the digestive system is crohns disease! < !!!>
What is a digestive chamber with one opening called?
gastrovascular cavity
