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Practice Reading: Multiple Choice, Single Answer ID: #50247 Pesticides’ Effect
Instructions ›
Read the text and answer the multiple-choice question by selecting the correct response. Only one response is correct.
New study from researchers at the University of California, Davis, finds that pesticides not only directly affect bee health, but effects from past exposure can carry over to future generations. The research suggests that female bees that were exposed to the insecticide as larvae had 20% fewer offspring than bees not exposed. Because the impacts of insecticides tend to be additive across life stages, repeated exposure has profound implications for population growth. The research showed that bees exposed to pesticides in both the first and second year resulted in a 72% lower population growth rate compared to bees not exposed at all.

From the study, pesticides ___

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Result:

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Option 2: "reduce bees’ fertility rates."

Explanation: This option is correct as the text clearly states that female bees exposed to insecticides as larvae had 20% fewer offspring. This directly indicates a reduction in fertility rates, aligning perfectly with the findings of the study.

Option 1: "indirectly have an influence on bees."

Explanation: This option is incorrect because the text states that pesticides directly affect bee health, not indirectly. The study emphasizes the direct impact of pesticides on fertility and population growth, making this option misleading.

Option 3: "promote population growth of bees."

Explanation: This option is incorrect because the text indicates that exposure to pesticides leads to a lower population growth rate, specifically stating a 72% reduction in population growth for bees exposed to pesticides. Therefore, this option contradicts the information presented.

Option 4: "have lower and lower effect if bees repeatedly expose to them."

Explanation: This option is incorrect as the text suggests that repeated exposure to pesticides has additive effects, leading to more severe consequences for population growth, rather than a diminishing effect. The study highlights that repeated exposure results in a significantly lower population growth rate.

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