7 biology & ecology. list 100 “things” that ehist at cvcc. determine if each “thing” is...
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7Biology & Ecology
Biology
Summer 2009
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List 100 “things” that ehist at CVCC.
Determine if each “thing” isLiving (L)Non-living (NL)Dead (D)
Questionable “Things”….
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All Living Things…
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Biotic – living
Abiotic – non-living
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5 Characteristics of Life
1. Cellular Organization – all living things are made of at least one cell
2. Heredity – all living things pass genetic information from parent to offspring
3. Reproduction – all living things have the ability to produce offspring
4. Metabolism – all living things require an input of energy 5. Homeostasis – all living things maintain an internal balance by an input and output of nutrients and energy
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Organism •One individual
Population •Group of similar individuals in an area
Community •Several populations interacting in an area
Ecosystem •All living organisms and the non-living environment in which they live
Biosphere •Area of earth that contains living organisms
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Biology – the study of life
Ecology – the study of ecosystems (biotic and abiotic things interacting in the same area)
Producer (Autotroph) – organism that can make its own food; usually through photosynthesis
Consumer (Heterotroph) – organism that cannot make its own food
Carnivore – eats only animalsHerbivore – eats only plantsOmnivore – eats plants and animals
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Energy Flow
Energy – the capacity to do work; energy can be lost as it moves through an ecosystem; about 10% of the energy at one level actually makes it to the next level
Food Chain – diagram used to show how energy is passed from one organism to another
Food Web – a diagram used to show how energy is passed through an entire ecosystem
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Food Web
1. Trace the path of one food chain within thefood web.
2. Use a different color to trace the path of another food chain within the food web.
3. Label all producers “P”. 4. Label all consumers “C”. 5. Label each consumer as either
Carnivore “C”Herbivore “H”Omnivore “O”
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Relationships Influencing Energy FlowPredator – organism that hunts for its foodPrey – organism that is hunted as food
Symbiotic Relationship – long term relationship between two organisms where at least one organism benefits
Mutualism – symbiotic relationship where BOTH organisms benefit
Parasitism – symbiotic relationship where ONE benefits and the other is harmed
Commensalism – symbiotic relationship where ONE benefits and the other is unaffected
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Nutrient Flow
Nutrient – material needed by living organisms to survive; examples: oxygen, carbon dioxide, water; nutrients recycle through ecosystems and are never created or destroyed.
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Water Cycle
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Carbon Cycle