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The primitive brain, the beginning of the digestive system, and the five aortic arches are all in the head end. These are viewable during a dissection.

2007-05-08 11:53:38 · answer #1 · answered by ecolink 7 · 0 0

Internal Structure Of Earthworm

2016-12-12 09:02:50 · answer #2 · answered by lightbourn 4 · 0 0

In the side or tip where the neuronic ganglioside is found Since the earthworm does not posses a brain as such, a mass of neuron cells is found in the dominant ens and thus it becomes the "dominant" end of that particular worm. Bad news,,,there is nothing in the exterior of the worm that could indicate us, which of the two, is the domitating side.( or end, properly said) , after we cut that end and have it analyzed,,,unfortunately, only the micrtoscope can tell us which one is that end......we will have to sacrifice the nemanthelmynth then.....

2016-03-18 23:11:55 · answer #3 · answered by Anonymous · 0 0

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