1. Most commercial pesticides are effective for only two or three years because
ID: 192408 • Letter: 1
Question
1. Most commercial pesticides are effective for only two or three years because A) the chemicals induce mutations that provide immunity. B) the chemicals mutate and become ineffective. C) the pests learn to hide when the chemicals are being applied. D) those pests born with mutations that provide immunity will survive and reproduce. E) new pests invade the area. 2. 2. Why was Darwin and Wallace's theory of evolution by natural selection revolutionary? A) It proved that individuals acclimated to their environment over time. B) It dismissed the idea that species are constant and emphasized the importance of variation and change in populations. C) It was the first time a biologist had proposed that species changed through time D) It was the first theory to refute the ideas of special creation. 3. Many crustaceans (e-g, lobsters, shrimp, and crayfish) use their tails to swim, but crabs have 3. reduced tails that curl under their shells and are not used in swimming. This is an example of A) a homologous structure C) natural selection B) a vestigial trait D) an adaptation 4. When unrelated organisms living under similar environmental demands evolve superficially 4 similar structures, it is called: A) comparative anatomy. C) superficial selection. B) coevolution. D) convergent evolution. 5. Cotton-topped tamarins are small primates with tufts of long white hair on their heads. 5. While studying these creatures, you notice that males with longer hair get more opportunities to mate and father more offspring. You believe that having longer hair is adaptive to these males. You should A) conclude that natural selection will lead to males with longer hair in your population B) conclude that longer haired males survive better than their shorter haired counterparts C) conclude that there is not enough variation in hair length for natural selection to act D) look for evidence that longer haired males have higher fitness E) determine if hair length is heritableExplanation / Answer
A1) those pests born with mutation that provide immunity will survive and reproduce.
A2) dismissed the idea that species are constant and emphasized the importance of variation and change in populations
A3) Homologous Structures have similar morphology, embryology and anatomy etc. but are dissimilar in their functions.
A4) In evolutionary biology, convergent evolution is the process whereby organisms not closely related (not monophyletic), independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.
A5) look for evidence that longer haired males have higher fitness.
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