【每日一题】AP 生物 20180125

AP Biology精编

During the industrial revolution, a major change was observed in many insect species due to the mass production and deposition of ash and soot around cities and factories. One of the most famous instances was within the spotted moth populations. An ecological survey was performed where the number of spotted moths and longtail moths were counted in 8 different urban settings over a square kilometer in 1802. A repeat experiment was performed 100 years later in 1902. The results of the experiment are shown below.

Why was the population of longtail moths also surveyed in this study?

(A) Variations in the environment were expected to alter the population of Longtail moths.

(B) Longtail moths were included as a control since they were not expected to change appreciably due to changes associated with the Industrial Revolution.

(C) As time passed from 1802 to 1902, the frequency of whitebodied pepper moths and black-bodied pepper moths both increased.

(D) As time passed from 1802 to 1902, the frequency of whitebodied pepper moths and black-bodied pepper moths both decreased.

题目解析

长尾蛾包括在实验中的目的是用来作为对照组，因为工业革命造成的环境变化对蛾子颜色可能会有影响，但是对尾巴的长短应该没有影响。

答案选择(B)

Longtail moths were included as a control since they were not expected to change appreciably due to changes associated with the Industrial Revolution。题目选自Cracking the AP Biology 2015 Edition