Which of the following animals have a single opening in their digestive system that serves both as a mouth and an anus?
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Q:
Which of the following animals have a single opening in their digestive system that serves both as a mouth and an anus?
- 1Arachnidsfalse
- 2Echinodermsfalse
- 3Platyhelminthestrue
- 4Arthropodsfalse
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