June SAT Biology E/M Pre/Post Test

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<p>To people who took E, did we settle on the two caterpillar/fledgling questions? The ones about why scientists worried and if the situation was interdependence/niche partitioning?</p>

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<p>took both</p>

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<p>Does anybody know what other answer choices there were for angiosperm and vertebrate question other than sexual reproduction and asexual reproduction? Also, I thought Mendel was known for genetics in pea plants, rather than his quantitative approach. </p>

<p>Gregor Johann Mendel (July 20, 1822[1] – January 6, 1884) was an Austrian Augustinian monk and scientist, who gained posthumous fame as the figurehead of the new science of genetics for his study of the inheritance of certain traits in pea plants.</p>

<p>-First sentence in Wikipedia about Mendel</p>

<p>Mendel was known for his genetic in pea plants, but it was his quantitative approach to genetics that made him stand out. He bred plants but it was his counting of the different number of plants in each different phenotype and calculating probability of certain phenotypes that made his work famous.</p>

<p>EDIT: And there were no answer choices that referred to his study of genetics; there was an answer choice that referred to his study of the sexual reproduction of pea plants, but that is referring to the process and not counting the different plants in different phenotypes for genetics.</p>

<p>Jeff: I remember one answer choice and it was storing carbohydrates. And I put quantitative data for Mendel because he did record how many plants had round/wrinkled seeds and more and found the ratio between dominant and recessive traits.</p>

<p>@hkim, I put “interdependence” because the caterpillars and the birds don’t share the same niche, but the birds are dependent in the caterpillars for food. I wasn’t really sure though… Anyone else?</p>

<ul>
<li>dependent ON</li>
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<p>Sorry</p>

<p>Thank you. Can anybody explain what the dots represented in the graph of the last few questions?</p>

<p>Helloworld: yeah I also put interdependence. I thought if it was niche partitioning, then one species would die out, right?</p>

<p>Jeff: what graph are you referring to?</p>

<p>Are you referring to the dots in the M section for the corn oil and the fetus reabsorption with the rats? If so, then I think the consensus is that the dots represented the percentage reabsorption of the fetus of the rats at different dose levels of the chemical (I forgot what it was called).</p>

<p>I remember it sais sth about average percentage. But I didn’t understand how they represented the average… so I chose the number of the rat fetus because they represent data points.</p>

<p>I vote interdependence as well.</p>

<p>^ Interdependence is probs right… but I put competitive exclusion…which couldn’t be right! Ah!</p>