The Question:
Within a decade of the introductionof a new insecticide, nearly all of the descendants of the target pests were immune to the usual-sized dose. the most likely explanation for this immunity to the insecticide is that_________.
a.) eating the insecticide caused the bugs to become resistant to it .
b.) eating the insecticide caused the bugs to become less resistant to it.
c.) it destroyed organisms that cause disease in the insects, thus allowing them to live longer.
d.) the pests developed physiological adaptions to the insecticide.
2007-01-08 18:19:08 · 14 answers · asked by kmagee 2 in Science & Mathematics ➔ Biology
I must agree with dukefenton, none of these are good answers. a and d are essentially the same answer, and they would be correct if this occurred over many generations (evolutionary change does not happen to individuals, only to populations over time). I suppose this is implied because the questions says "with in a decade..." But I still think a and d are the same thing because "becoming resistant" means there has been physiological changes in the organism to able to tolerate the chemical (like having an enzyme to break down the compound).
2007-01-08 19:45:21 · answer #1 · answered by Ms. K. 3 · 0⤊ 0⤋
The pests developed physiological adaptations to the insecticide
2007-01-08 18:28:20 · answer #2 · answered by mamunbau 2 · 0⤊ 0⤋
Strictly speaking, none of these are likely. It is most probable that the insecticide killed the bugs which were most susceptible to it, selecting for those which had some degree of resistance. These bugs survived to produce young, and - to the extent that the resistance is heritable - passed on that characteristic. The idea that exposure to a toxin *causes* the development of resistance, rather than selecting for it, is closer to the theories of Lamarck, which have been largely discredited for lack of evidence.
Try that one on your teacher.
2007-01-08 18:29:04 · answer #3 · answered by dukefenton 7 · 0⤊ 0⤋
Don't hurt yourself thinking about this one. And per the first response to this question - here's a hint, answer A is Lamarkian..and incorrect. If you don't know what that means it might be time to pay attention in class.
2007-01-08 18:30:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Yes A is the most correct answerer, C and D also correct but that's explaing simply by A.
2007-01-08 18:32:53 · answer #5 · answered by Tingo 2 · 0⤊ 0⤋
its the same effect as getting a flu shot. it gives you the flu so you don't get the flu.
also the bugs that survived the poison gave birth to a stronger more resistant brood.
D final answer.
2007-01-08 18:33:41 · answer #6 · answered by Tank Stillton 2 · 0⤊ 0⤋
D.
It couldn't be A because the bugs it was the decendants that were immune.
It couldn't be B because, once again, it was the decendants that became immune.
It couldn't be C because pesticides do not kill disease.
2007-01-08 18:32:38 · answer #7 · answered by frinkle425 1 · 0⤊ 0⤋
D. adaptation is the key word for this.
2007-01-08 18:28:32 · answer #8 · answered by abi in malam rem 1 · 0⤊ 0⤋
it late in le evenings fory me tas answeeers
me old man fromphillypeens wit no languesto skills to translate me answeers to you. plea excusy me englisheses me right off de boat
wish yous well in de name of de sun god
2007-01-08 18:29:22 · answer #9 · answered by Yvonne 4 · 0⤊ 0⤋
d
2007-01-08 20:30:28 · answer #10 · answered by arshad 2 · 0⤊ 0⤋