What type of symmetry do most sessile animals possess

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Questions

1. What type of symmetry do most sessile animals possess? more active animals? What is the selective advantage of each type of symmetry?

2. Explain the difference between a diploblast and a triploblast. Why was the evolution of a third embryonic tissue layer important?

3. Why are body cavities and segmentation considered important evolutionary developments? How do they improve control over movement?

4. Why was the evolution of cephalization correlated with the evolution of bilateral symmetry? Why were both of these features significant?

5. What are some distinctions between protostome development and deuterostome development?

6. The animal Fabricia has eyes at both ends of its body. What might you predict about its locomotion? Why?

Reference no: EM133932937

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