Ecology Quiz
 Technique 1:  SamplingA technique called sampling is sometimes used toestimate population size.  In this procedure, the organisims in a few small areas are countedand projected to the entire area.  For instance,if a biologist countes 10 squirrels living in a 200 square foot area, she could predict that there are 100 squirrels living in a 2000 square foot area. 1.  Sampling TechniqueA biologist collect 1 gallan of pond water and counted50 paramecium.  Based on the sampling technique,how many paramecium could be found in the pondif the pond were 1,000 gallons?a. 50 parameciumb. 500 parameciumc. 5000 parameciumd. 50,000 paramecium Technique 2 - Mark and RecaptureIn this procedure, biologist use traps to capture theanimals alive and mark them in some way.  The animalsare returned unharmed to their enviornment.  Over a long time period, the animals from the population arecontinued  to be trapped and data is taken on howmany are captured with tags.  A mathematicalformula is then used to estimate population size. 2.  Mark and Recapture TechniqueA biologist originally marked 40 butterflies in WilsonPark.  Over a month long period -butterfly trapscaught 200 butterflies.  Of those 200, 80 were foundto have tags.  Based on this information, what is the estimated population size of the butterflies in WilsonPark?a. 400b. 100c. 8,000d. 16,000 3.  Ultimately, all of the energy in most food chainsor food webs comes from:a. Producersb. Consumersc. Decomposersd. Scavengers 4. The producer in this food web is the: a. Arctic Charb. Polar Bearc. PhytoplanktonCapelin 5. Wastes and dead organisims from this food chainwill be fed upon bya. tertiary consumersb. decomposersc. autotrophsd. herbivores
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