SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The use of pesticide on crops has been a common farming practice for decades. What has been the greatest effect of natural selection through the use of pesticides on certain insect populations?
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Natural selection has been altered because the insects and their predators are killed.
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The rate of selection is increased because the pesticides do not kill the insects that are naturally resistant to it.
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The rate of selection has decreased because the pesticides kill only young insects
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The pesticides have altered natural selection by causing the insect DNA to spontaneously mutate.
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Explanation:
Detailed explanation-1: -Toxic effects by pesticide exposure can range from mild symptoms, like minor skin irritation or other allergic symptoms, to more severe symptoms, like strong headache, dizziness, or nausea. Some pesticides, e.g., the organophosphates, can cause severe symptoms, like convulsions, coma, and possibly even death.
Detailed explanation-2: -Pesticides can produce negative effects on crop physiology―especially on photosynthesis―leading to a potential decrease in both the growth and the yield of crops.
There is 1 question to complete.