2015年5月11日AP生物考试预测

　　历年AP考试持续是时间很长，大概有两周的时间，这么长的考试时间会有很多的考试科目，面对这么多的考试科目相信考生们的压力会很大吧，小编为大家准备了2015年5月11日AP生物考试预测的内容。

　　2015年5月11日AP生物考试预测：

　　Fossils of lobe-finned fishes, which are ancestors of amphibians, are found in rocks that are at least 380 million years old. Fossils of the oldest amphibian-like vertebrate animals with true legs and lungs are found in rocks that are approximately 363 million years old. Three samples of rocks are available that might contain fossils of a transitional species between lobe-finned fishes and amphibians: one rock sample that is 350 million years old, one that is 370 million years old, and one that is 390 million years old. (a)

　　Select

　　the most appropriate sample of rocks in which to search for a transitional species between lobe-finned fishes and amphibians.

　　Justify

　　your selection. (2 points maximum)

　　•Selection: Rocks from 370 MYA sample.

　　•Justification: Transitional fossils are found between 380 MYA (when lobe-finned fishes lived) and 363 MYA (when amphibians appeared) OR between different strata/layers in the correct order. (b)

　　Describe

　　TWO pieces of evidence provided by fossils of a transitional species that would support a hypothesis that amphibians evolved from lobe-finned fishes.

　　(2 points maximum)

　　Descriptions include but are not limited to the following:

　　•Bones OR specific skeletal structures legs /limbs/digits vertebrae flat skulls (interlocking) ribs flexible neck

　　•Scales

　　•Teeth

　　•Other homologous structures

　　•Has traits of both the lobe-finned fish and the amphibian

　　•Finding the transitional fossils in the same area/same environment as either the lobe-finned fish or the amphibian

　　•Molecular (DNA) evidence

　　以上内容是有关2015年5月11日AP生物考试预测的详细介绍，同学们在考前一定要放松心情来迎接考试，相信小编带给大家的考前预测会为大家提供帮助的。