<p>I have a test (teacher says AP like with bell curve and all) on whole Ecology Unit.</p>
<p>100 MC and an essay question on Ecology.</p>
<p>Any advise on what to focus on and what to absolutely know?</p>
<p>I'm panicking!!!</p>
<p>Describe the trophic levels in a typical ecosystem. Discuss the flow of energy through the ecosystem, the relationship between the different trophic levels, and the factors that limit the number of trophic levels.</p>
<p>this is a essay question about ecology I found how should I answer this?</p>
<p>Let me see what I can remember as I pluck a year of AP Bio from my mind... Energy is lost at each trophic level (10%), each level contributes to each other in the amount of energy transferred such as producers produce food for consumers to consume (also look at the fact that you have producers, consumers, detritivores, etc.) , and umm... one of the most important limiting factors is the biomass (energy is lost at each level until it's all recycled to be used up again.)</p>
<p>This really sucks... ^^ my less than thorough answer. Especially since Ecology was the last unit I covered in my AP Bio class last year.</p>
<p>Sorry.
Sorry.</p>
<p>We didn't cover ecology in AP (did so in honors). I can't remember the specifics but I can tell you it's probably the most BS'able topic.</p>
<p>Understand terms such as the competitive exlusion principle (2 diff species competing, one will come out on top), resource patitioning (fancy term for sharing), niches (a specie's role).</p>
<p>Know the levels of symbiosis aka species interaction. Mutualism, commensalism, parasitism. </p>
<p>This website was particularly helpful for me last year when I took bio: <a href="http://www.sirinet.net/%7Ejgjohnso/aphome.html%5B/url%5D">http://www.sirinet.net/~jgjohnso/aphome.html</a></p>
<p>If given a graph comparing species, use common sense to guide the way. The 2006 AP exam gave a graph showing 2 species A and B. I forget the variable under comparison, but basically one of them was failing to survive and you had to supply reasons. That was ALL the graph showed. So many conclusions can be drawn as long as you know the basic terms.</p>
<p>actually, 10% is the amount of energy that each successive level uses.</p>