Podcast
Questions and Answers
What term describes organisms that produce their own food using sunlight or chemical energy?
What term describes organisms that produce their own food using sunlight or chemical energy?
- Decomposers
- Heterotrophs
- Consumers
- Autotrophs (correct)
In a food chain, which organisms are typically found at the top of the pyramid?
In a food chain, which organisms are typically found at the top of the pyramid?
- Tertiary Consumers (correct)
- Secondary Consumers
- Producers
- Primary Consumers
Which of the following is a key difference between primary and secondary succession?
Which of the following is a key difference between primary and secondary succession?
- Primary succession begins in lifeless areas. (correct)
- Primary succession occurs on previously inhabited land.
- Secondary succession occurs without soil.
- Secondary succession takes longer to establish.
What is the main function of nitrogen fixation in an ecosystem?
What is the main function of nitrogen fixation in an ecosystem?
Which formula represents the process of photosynthesis?
Which formula represents the process of photosynthesis?
Flashcards
Abiotic
Abiotic
Non-living components of an ecosystem, such as sunlight, water, temperature, and soil.
Meniscus
Meniscus
The curved upper surface of a liquid in a container, caused by surface tension.
Food Web
Food Web
A complex network of feeding relationships within an ecosystem, showing multiple pathways of energy transfer.
Natural Selection
Natural Selection
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Adaptation
Adaptation
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Study Notes
Ecology Study Notes
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Abiotic vs. Biotic: Distinction between non-living (abiotic) and living (biotic) factors in an ecosystem.
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Meniscus: Curved surface of a liquid in a container, often important in measuring volumes.
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Food Web vs. Food Chain: A food web is a complex network of interconnected food chains, while a food chain shows a single path of energy transfer.
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Natural Selection: Process where organisms better adapted to their environment are more likely to survive and reproduce.
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Adaptation: A trait that enhances an organism's survival and reproduction in its environment.
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Producer vs. Consumer: Producers create their own food, while consumers obtain energy by consuming other organisms.
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Autotroph vs. Heterotroph: Autotrophs are producers, while heterotrophs are consumers.
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10% Rule: Approximate rule stating that only about 10% of the energy available at one trophic level is transferred to the next.
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Trophic Pyramid: Graphical representation of energy flow in an ecosystem, arranged in hierarchical levels (trophic levels), with producers forming the base and apex predators at the top.
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Calculating Energy Transfer in a Trophic Pyramid: Using the 10% rule to estimate the energy transfer between trophic levels.
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Photosynthesis Formula: The chemical equation describing the process by which green plants convert sunlight, carbon dioxide, and water into glucose (sugar) and oxygen.
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Cell Respiration Formula: The chemical equation describing the process by which organisms break down glucose (sugar) to obtain energy.
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Climax Community: A stable, mature community that undergoes little change in species composition.
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Ecological Succession: The gradual change in species composition in a community over time.
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Primary vs. Secondary Succession: Primary succession begins on barren land, while secondary succession occurs on previously vegetated land.
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Pioneer Species: First species to colonize a barren or disturbed habitat.
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Nitrogen Fixation: Process where atmospheric nitrogen is converted into a usable form for plants.
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