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Questions and Answers
What is the primary source of energy and building materials for plants?
What type of relationships exist between organisms in a food web?
What is the effect of a decrease in one population on other populations in a food web?
What is a characteristic of all organisms in a food web?
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What is a food web?
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What is the role of a producer in a food web?
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What is an example of a direct interaction in a food web?
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What would happen to the population of Freshwater Clams if the population of Chubb increased?
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What would happen to the Leeches population if Mallard Ducks were removed from a food web?
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What is the function of the seven gill slits in a sea lamprey?
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What is the relationship between a flea and Alfred?
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What is the main characteristic of a producer in a food web?
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What happens to the native species when an invasive species is introduced to an environment?
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What is a characteristic of an invasive species?
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What is an example of a predator/prey relationship?
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What would happen to the Foxes and Raccoons population if Mallard Ducks were removed from a food web?
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Study Notes
Energy and Building Materials
- Animals obtain energy and building materials by consuming other animals and plants.
- Plants produce their energy and building materials using light and water.
Food Webs and Chains
- A food web is a network of interconnected food chains.
- A food chain is a diagram showing feeding relationships among organisms (producer/consumer and predator/prey).
- In a food chain/web, a change in one population affects others through direct and indirect interactions.
Identifying Components
- Producers: organisms that make their own food (e.g., plants, algae, aquatic plants).
- Consumers: organisms that consume their food by eating plants and/or other animals (e.g., yellow perch, mice).
- Predators: organisms that hunt and eat other organisms (e.g., walleye, great blue heron).
- Prey: organisms that are eaten by predators.
Interactions and Effects
- Direct interactions: relationships between organisms that directly affect each other.
- Indirect interactions: relationships between organisms that affect each other indirectly.
- Removing an organism from a food web can have a ripple effect on the entire ecosystem.
Structure and Function
- Organisms have specific structures that allow them to carry out different functions (e.g., breathing, eating, moving, reproducing).
- Examples: sea lamprey's gill slits for breathing, a bird's wings for flying.
Relationships Between Populations
- Types of relationships: producer/consumer, predator/prey, and parasite/host.
- Producers: plants that produce their own food.
- Consumers: animals that consume plants and/or other animals.
Invasive and Native Species
- Invasive species: organisms that enter an environment where they do not normally live, negatively impacting native species.
- Native species: organisms normally found in a particular environment.
- Examples: sea lamprey in the Great Lakes (invasive), grass (native).
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Description
Learn about the interconnectedness of organisms in a food web, including producers, consumers, predators, prey, parasites, and hosts. Discover how populations affect each other through direct and indirect interactions.
