Passage IV
Because amphibian eggs lack a hard outer shell, their DNA can be damaged by exposure to ultraviolet (UV) radiation in sunlight. Table 1 lists the egg-laying behavior of 7 amphibian species and the species’ relative ability to repair DNA damage caused by exposure to UV radiation.
Figure 1 shows the percent of eggs that survived to hatching in the lab for these 7 species after exposure to unfiltered sunlight or to sunlight from which the UV radiation had been filtered out.
Figure 2 shows predicted UV levels over time in 4 geographic regions that have amphibian populations.
20. According to the data in Figure 1, which species showed the greatest difference between the percent of eggs that survived to hatching after exposure to unfiltered sunlight and the percent of eggs that survived to hatching after exposure to UV-filtered sunlight?
Your Answer is
Correct Answer is H
Explanation
Look at figure 1, Species E has the greatest difference in hatchability between exposure to sunlight and exposure to UV light