Biology 2483A Lecture 12: Lecture 12
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23 Dec 2011
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Related Questions
In a food chain, _____ occupy the lowest trophic level and _____ occupy the highest trophic level
decomposers; predators |
producers; omnivores |
producers; decomposers |
herbivores; omnivores |
plants; predators |
Plant A | Plant B | ||||||||
Use following link to fill in numbers and answer fewquestions. | |||||||||
Prediction: startingpopulation | |||||||||
Prediction: endingpopulation | |||||||||
Starting population | |||||||||
Ending population | |||||||||
Plant A | Plant B | Herbivore A | |||||||
Prediction: startingpopulation | |||||||||
Prediction: endingpopulation | |||||||||
Starting population | |||||||||
Ending population | |||||||||
1. Whatassumptions does this model make about co-dominance as well as thegeneral terrain of the ecosystem? | |||||||||
2. Do youfind one producer to be dominant? Why might one producer bedominant over another? | |||||||||
Step 2: | |||||||||
1. Do youfind one producer to be dominant? Why might one producer bedominant over another? | |||||||||
2. How doproducer population numbers with the presence of an herbivorecompare to the primary colonizer model? | |||||||||
DATA TABLE: ECOLOGY | |||||||||
LESSON 2 | |||||||||
Lesson 2: | Plant A | Herbivore A | Omnivore A | Top Predator | |||||
Step 1 | |||||||||
(X, Â, or ¯) | |||||||||
Prediction | |||||||||
Simulation 1 | |||||||||
Simulation 2 | |||||||||
Lesson 2: | Plant A | Plant B | Plant C | Herbivore A | Herbivore B | Herbivore C | Omnivore A | Omnivore B | Top |
Predator | |||||||||
(X, Â, or ¯) | |||||||||
Prediction | |||||||||
Simulation 1 | |||||||||
Simulation 2 | |||||||||
Modifications made | |||||||||
Responses to questions | |||||||||
Step 1: | |||||||||
1. Was your predictioncorrect? How did you arrive at your prediction? What differenceswere there between your prediction and the simulation? | |||||||||
2. What would happen to thisimaginary ecosystem if the producers were to die out? | |||||||||
3. Which populations wouldbenefit the most from the presence of decomposers? | |||||||||
Step 2: | |||||||||
1. Was your predictioncorrect? How did you arrive at your prediction? What differenceswere there between your prediction and the simulation? | |||||||||
2. Were you able to modifythe parameters so that each species survived? Explain how youdecided what changes to make. | |||||||||
3. Which way does energy flowand how does eating an organism result in energy transfer? |