Unlike the flatworms, the roundworms have a body cavity with internal organs. A roundworm has a complete digestive system, which includes both a mouth and an anus. This is a significant difference from the incomplete digestive system of flatworms. 1 июн. 2020 г.
Which worm has a body cavity?
Unlike the flatworms, the roundworms have a body cavity with internal organs.
How many body cavities do roundworms have?
Flatworms (Platyhelminthes)Roundworms (Nematoda)Flat bodyRound bodyPrimitive gut (1 opening)Complete digestive tract (2 openings)Acoelomate (no body cavity)Pseudocoelem (partial body cavity)
Which of the worms has no body cavity?
Flatworms have no true body cavity, but they do have bilateral symmetry. Due to the lack of a body cavity, flatworms are known as acoelomates. Flatworms have an incomplete digestive system. This means that the digestive tract has only one opening.
Do flatworms have a body cavity?
Flatworms have no body cavity other than the gut (and the smallest free-living forms may even lack that!) and lack an anus; the same pharyngeal opening both takes in food and expels waste.
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