• What is the biological species concept (BSC)? (5)• There are many problems associated with BSC. Please list three example limitations of the BSC. (10)• Why invertebrate not a natrual group? What about Protozoa and worms?（Figure a cladogram for each to explain). (15)• Compare jellyfish, starfish and human, make five character transformation series. (15)• Explain the terms of apomorphy, synapomorphy, plesiomorphy, symplesiomorphy, autapomorphy by examples (25)• Make a cladogram, indicate the evolutionary relationships of jellyfish, starfish and human, explain it. (10)• Take examples to explain what are acoelom, pseudocoelom and eucoelom。What about the central cavity of hydra （水螅）?（20）
