Answered

Number correct: 5
Number incorrect: 1
It has been found that many insect pest populations have become more
resistant to pesticides over time. How might this have occurred?
A. Pesticide resistant insects died and did not pass on their genes.
B. The chemical pesticides given to insects have mutated and no longer
work.
C. Individual insects have learned to resist pesticides and have changed
themselves in order to survive and reproduce.
D. Pesticide resistant insects survived and reproduced more, passing on
their genes for resistance.



Answer :

GinnyAnswer
Certainly! Here's a clear and concise response to the question: The correct answer is D. Pesticide resistant insects survived and reproduced more, passing on their genes for resistance. 1. Explanation: When insect populations are exposed to pesticides, some individual insects may naturally possess genetic variations that make them resistant to the pesticide's effects. 2. Survival advantage: In an environment where pesticides are used, insects that are resistant to the pesticide will survive while non-resistant insects will die when exposed to the pesticide. 3. Reproduction: The resistant insects that survive are then more likely to reproduce and pass on their resistant genes to their offspring. 4. Natural selection: Over time, this process of natural selection leads to a higher proportion of the insect population having genes for resistance, making the population as a whole more resistant to the pesticide. By following this cycle, pesticide-resistant insect populations can gradually become more prevalent in an area.

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