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Flatworms have a concentration of nerve tissue in the head end, which was a major step in the evolution of what organ?

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asked Dec 30, 2024 in Science by MammieLayne (410 points)

Flatworms have a concentration of nerve tissue in the head end, which was a major step in the evolution of what organ?

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answered Dec 30, 2024 by Emily9252148 (290 points)

brain

Flatworms have a concentration of nerve tissue in the head end. This was a major step in the evolution of a brain. It was also needed for bilateral symmetry.

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