17) When a mosquito infected with Plasmodium first bites a human, the Plasmodium A) cells infect the human liver cells B) oocyst undergoes meiosis C) cells cause lysing of the human red blood cells D) gametes fuse, forming an oocyst 18) Which of the following is most likely to lead to paralytic shellfish poisoning? A) dinoflagellates B) Toxoplasma C) Giardia D) Euglena E) Plasmodium 19) Protists and bacteria are grouped into different domains because A) protists have a membrane-bounded nucleus, which bacterial cells lack B) bacteria are not made of cells C) bacteria decompose protists D) protists eat bacteria E) protists are photosynthetic 17) 18) 19) 20) Which of the following statements is consistent with the assertion that protists are paraphyletic? 20) A) Protists do not share a single common ancestor. B) Protists all share a common set of synapomorphies. C) Protists are all more primitive than land plants and animals. D) Some protists evolved into other eukaryotic groups.