Yes they do digest food.
Yes that is true
OR
That's just the way God made them. Flatworms and roundworms have certain body cavities that basically help them digest food,respire,reproduce,and even move from one place to another.
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Puddles
TunaSalmon Beef
there are three
Flatowrms have muscle cells, they are a triploblastic phylum. They have endo, meso and ectoderm layersSponges are Parazoa and lack any true tissue at allCnidaria are diploblastic, having only endoderm and ectoderm
Yes, all eukaryotic multicellular organsims are.
Wheat cattle and timber