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D Question 7 1 pts One body plan, called bilateral symmetry, represents a major branch point in animal evolution and can be described as O resembling a pail O being a stationary individual O a mechanism for detecting environmental stimuli O a body plan with only one way to split it into two equal halves-right down the midline O an animal that is identical all around a central axis D Question 8 1 pts An acoelomate animal has O a coelom lined with endoderm O an unlined body cavity O a coelom lined with ectoderm O no coelom O a coelom lined with mesoderm