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Ch. 5 Test Review
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Populations• Key Terms–Populations –Carrying capacity
Know the difference between the following: (p. 104-105)• Logistic Growth• Exponential Growth
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Why is Human Pop. Growing so fast?
• Agricultural Technology• Medical advancements• Industrial Rev. (1700’s)
Which part showsbirth and death rates about equal?Where is growth 0?
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Human Pop. (cont.)
•Better sanitation, hygiene and disease control have lowered the
DEATH RATE!!!
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Which is a population? A- all the insects in Memphis, TN B- all the cats in LeMars, IA C- all the birds in Chicago,IL D- all the fish in Lake SuperiorIt must be an interbreeding group.
B
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Milkweed plant & Monarch butterfly
• Make sure you know about the co-evolution relationship of these 2 organisms.• The poisonous plant helped the
caterpillar. How?
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Factors that Affect Pop. size• Biotic- – LIVING– Ex. Prey
• Abiotic-– NONLIVING– Ex. Disease, weather
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Predator/ Prey • Most animals are both predators and
prey.• Predators:–Hunt and kill their food
• Prey: –Are the food
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Symbiosis• When 2 organisms live in close
association with each other.
• 3 Examples… Parasites Mutualism Commensalism
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Herbivory p. 110 • Herbivores eat plants, but plant do try to
protect themselves sometimes.• Ex. Thorns, spines, bad tasting chemicals.• Monarch butterflies have evolved a way to
get around that problem.–Use the toxin in milkweeds in their own
defense.
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Parasite/Host• Symbiotic
• Examples…–You come up with 3
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Commensalism• Symbiotic• Examples…–You come up with 3
• Ex. Orchids use trees to get close to sunlight
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Mutualism• Symbiotic• Examples…–You come up with 3
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Niche• The ROLE an organism has in its
ecosystem.• Fundamental Niche-what is
could occupy• Realized Niche-what it really
does occupy