Cornell Notes Template
Name: __________________________ Topic: ________4.2____________
|Essential Question: |
|Questions/Main Ideas: |Notes: |
|1. |A niche is the range of physical and biological conditions in which a species lives and the way the species |
| |obtains what it needs to survive and reproduce |
| |Aka it’s role in the ecosystem |
| |Niche-Involves: |
| |Resources available-any necessity of life |
| |En 2: Give an example of a resource: |
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| |Physical factors-how it interacts with abiotic factors |
| |En 3: Give an example of an abiotic factor an organism interacts with: |
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| |biological aspects-how it interacts with biotic factors |
| |En 4: Give an example of a biotic factor an organism interacts with: |
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| |tolerance-the ability to survive and reproduce under a range of environmental circumstances |
| |When an environmental condition extends beyond an organisms optimum range, it experiences stress |
| |This means more energy is used for homeostasis, and less for growth/reproduction |
| |The species’ tolerance determines where its habitat is |
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|Questions/Main Ideas: |Notes: |
|2. |2. By causing species to divide resources, competition helps determine the number and kind of species in a |
| |community and the niche each species occupies |
| |a. intraspecific competition-competition among members of the same species |
| |b. interspecific competition-competition among members of different species |
| |Non native species can become invasive species if introduced into a new environment |
| |May have no natural predators |
| |grow out of control |
| |Monopolize resources |
| |Competitive exclusion principle-no two species can occupy exactly the same niche in exactly the same habitat |
| |at exactly the same time |
| |The species that is better at competing for resources will survive |
| |Organisms may divide resources instead of competing for them, each forming their own niche |
| |En 5: How did the North American warblers divide their resource? |
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|3. | |
| |3a. Predators |
| |affect the size of prey populations |
| |determine where the prey can live and feed |
| |3b. Herbivores |
| |affect the size and distribution of plant populations |
| |determine the places certain plants can survive and grow |
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| |-Keystone species-species whose population dramatically affects the structure of a community |
| |En 6: Explain how otters are a keystone species |
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| |4. There are 3 main classes of symbiotic (where organisms live together) relationships: |
| |a. Mutualism: relationship where both species benefit |
| |b. Parasitism: relationship where one organism lives inside or on another and harms it |
| |c. Commensalism: relationship where one organism benefits, and the other is neither helped nor harmed |
| |En 7: give an example for each of the 3 symbiotic relationships: |
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| |Type of relationship: |
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| |Species 1 |
| |Species 2: |
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| |Mutualism |
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| |Parasitism: |
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| |Commensalism: |
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|Summary |
|In your own words and in complete sentences, write a 3 – 4 sentence summary paragraph. Your summary should cover the main concepts of the notes, be accurate, and |
|have adequate details. |
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