1. Ms. Smedley & Mr. Bartolone’s
Population Ecology
Jeopardy

2. Symbiotic
Relationships
Succession
Limiting
Factors
Growth
Curves
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3. What are the 3 types of Symbiotic Relationships?
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Commensalism
Mutualism
Parasitism
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5. What is Mutualism?
Give an example…
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A relationship between two species where both benefit
Ex: bird & cow
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7. What is a symbiotic relationship?
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A relationship between two organisms
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9. What is Parasitism?
Give an example…
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A relationship between two organisms, where one benefits and one is harmed.
Ex: a tick and you
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11. What is Commensalism?
Give an example…
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A relationship where one organisms benefits and the other is neither harmed nor benefits.
Ex: A bug hitching a ride on you
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13. What is Succession?
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A change in an ecosystem over time
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15. What is Primary Succession?
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An ecosystem beginning (pioneer species) where there previously was no life
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17. What is secondary succession?
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An ecosystem starting where there was once life before.
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19. Why does Primary Succession take longer than Secondary Succession?
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Because there is no soil available
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21. What is the difference between a Pioneer Species and a Climax Community?
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Pioneer Species – first species in an ecosystem
Climax Community – the highest point in succession
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23. What are Limiting Factors?
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Biotic or Abiotic factors that restricts the existence of an organism.
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25. Biotic Factors in the environment that have an increasing effect as population size increases are called…
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Density-Dependent Factors
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27. What are Density-Independent factors?
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Abiotic factors in the environment that affect populations regardless of their density
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29. What factors affect density?
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Immigration
Emigration
Birth
Death
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31. What is the formula for density?
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Dp = N / S
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33. What is a Boom and Bust curve?
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A rapid increase, then rapid decrease
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35. What does a J-curve show?
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An exponential growth in a population
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37. What is a Carrying Capacity?
How do we show it?
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The maximum amount of organisms that an environment can hold. It is shown as an S-curve.
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39. What type of curve does our world currently have?
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J-curve
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41. What are the x & y axis for a growth curve graph?
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Number of Species & Time
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43. What is Immigration?
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Movement of individuals into a populations
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45. What are the 3 key features of a Population?
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Size
Density
Dispersion
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47. Disease, starvation, competition, and parasites are examples of…
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Density-Dependent Factors
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49. What is the Rate of Natural Increase?
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Birth Rate – Death Rate
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51. What is Dispersion?
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How the population is spread out (clumped, even/uniform, or random)
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