Passage I

The whitefly Bemisia argentifolii is an insect that has 3 distinct life stages: egg, nymph ( juvenile), and adult. A study examined the effects of external temperature on the duration of each of the 3 life stages of B. argentifolii and on egg production by adult female B. argentifolii. Figure 1 shows, for each of 5 external temperatures, the average duration of each life stage. Figure 2 shows, for each of the 5 temperatures, the average number of eggs produced per female per day during the first 7 days of adult life.

2. According to Figures 1 and 2, as the temperature increased from 20°C through 27°C, on average, did the duration of the adult stage increase or decrease, and did the number of eggs produced per female per day increase or decrease?

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

Figure 1 shows that the temperature increases, and the average duration decreases; Figure 2 shows that at 20~27 degrees, the temperature increases, and the number of egg produced per female per day increases; choose J