Exploring Ecological Relationships: A POGIL Approach

Ecological Relationships POGIL 1. What does the Y axis on the left represent? Number of Hares 2. What does the Y axis on the right represent? Number of Lynx 3. For both Y axes, what value do x10 to the 3rd power the numbers on the axes need to be multiplied by? 4. What was the approxi160 Hares mate population of snowshoe hares in 1865? 5. What was the approxoimate population of lynx in 1865? 60 Lynx's or 57 to be exact 6. When the number of snow- After 1865 the number of Snowshoe hares shoe hares is high, what hap- increase and decreasing with the Lynx so pens to the number of lynx- both are on the same path es? Use actual data from the graph to support your observations. 1/4 7. What happens to the popula- When the predators start dying out that tion of Lynx as the number means their food source is running out as of Snowshoe Hares decreas- well. es? Use actual data from the graph to support your observation. 8. Propose an explanation for Since Lynx's are carnivores their food source the apparent cause and effect easiest to get. It only resorts to a Predator relationship between the pop- Prey relationship. ulations of Lynx and Hares. 9. What does this information The predator-prey populations depend on tell you about the effect of the each other. size of prey populations on the number of predators? 10. What does this information Their survial depends on their prey. tell you about the effect of predators on the populations of their prey? 11. What other factors would in- Disease, weather, food, water, environment fluence the size of the hare and oxygen population in addition to the size of the population of Lynx. 12. -Model 2 - SymbiosisDog & Flea Parasitism 13. Fungus & Algea Mutalism 14. Termite & Cellulose-Digesting bacteria Mutalism 15. Shark & Remora Commensalism 16. Cattle & Cattle Egret Commensalism 2/4 17. Human & Tapeworm Parasitism 18. In the Dog and Flea relation- Only beneifits 1 organism ship, is there a benefit for one of the organisms or for both? 19. Is either the Dog or the Flea The dog is harmed by this relationship harmed by this relationship? 20. Which is another relationship The human & tapeworm in Model 2 similar to that between the dog and flea? 21. -Refer to the Fungus & Algae both benefit relationship in Model 2Is there a benefit for one of the organisms or for both? 22. Is either the Fungus or the Al- None are harmed gae harmed by this relationship? 23. Which is other relationship in termite & cellulose - digesting bacteria Model 2 similar to that between the Fungus and the Algae? 24. In the Shark and Remora re- Only benefits 1 organism lationship, is there a beneift for one of the organism or for both? 25. Is either the Shark or the None are harmed Remora harmed by this relationship? 26. Which other relationship in Model 2 is similar to that Cattle & Cattle Egret 3/4 between the Shark and the Remora? 27. With your group, choose one of the organism pairs from Model 2 and justify why you categorized the relationship as you did. The one we choose was the Dog & Flea. The reason why we choose Parasitism for it was because parasitism means one organism benefits and the other is harmed. The Dog gets infections & rashes from the Flea, while the Flea gets what it needs, so in the end, the Dog is getting harmed in the process. 4/4