Which group of protists would be most likely to have cilia as adults and why? The sporozoan protists would, since they have to spread their spores around. The heterotrophic protists would, since they use them to gather food. The parasitic protists would, since they need to find other organisms to attack. The autotrophic protists would, since they need light to make their own food.

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.