Podcast
Questions and Answers
What is a species?
What is a species?
- A group of organisms that are genetically identical
- A group of organisms that can only survive together
- A group of organisms that cannot breed with each other
- A group of organisms that can breed with one another and produce fertile offspring (correct)
How does biodiversity typically compare between natural and artificial ecosystems?
How does biodiversity typically compare between natural and artificial ecosystems?
- Biodiversity is the same in both natural and artificial ecosystems
- Artificial ecosystems often have more biodiversity than natural ecosystems
- Natural ecosystems tend to have greater biodiversity than artificial ecosystems (correct)
- Natural ecosystems usually have less biodiversity than artificial ecosystems
What factors affect the growth of populations within an ecosystem?
What factors affect the growth of populations within an ecosystem?
- Food, habitat, and mate availability (correct)
- Only food availability
- Habitat and climate only
- Environmental pollution
Which of the following statements about ecosystems is false?
Which of the following statements about ecosystems is false?
What can be said about genetic variation in large populations?
What can be said about genetic variation in large populations?
What is a population in ecological terms?
What is a population in ecological terms?
What does morphology refer to in the context of individual organisms?
What does morphology refer to in the context of individual organisms?
Which of the following best describes an ecosystem?
Which of the following best describes an ecosystem?
What do population ecologists study?
What do population ecologists study?
How do abiotic factors influence individual organisms?
How do abiotic factors influence individual organisms?
What can impact populations according to the content?
What can impact populations according to the content?
What is a community in ecological terms?
What is a community in ecological terms?
What factors do ecologists consider when studying communities?
What factors do ecologists consider when studying communities?
Which statement describes an ecosystem?
Which statement describes an ecosystem?
What is the biosphere considered to be?
What is the biosphere considered to be?
What likely contributed to the decline of collared pika populations between 1990-2000?
What likely contributed to the decline of collared pika populations between 1990-2000?
Flashcards
Species
Species
A group of organisms that can reproduce and create fertile offspring.
Population
Population
A group of the same species living in the same area at the same time.
Community
Community
All the populations of different species that live in a particular area.
Ecosystem
Ecosystem
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Biotic factors
Biotic factors
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Abiotic factors
Abiotic factors
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Ecology
Ecology
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Adaptation
Adaptation
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Population Ecology
Population Ecology
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Biosphere
Biosphere
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Competition for resources
Competition for resources
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Predator-Prey Relationship
Predator-Prey Relationship
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Distribution of species
Distribution of species
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Study Notes
Individuals, Populations, and Communities in Ecosystems
- Species: A group of organisms that can breed with one another and produce fertile offspring (e.g., humans, grizzly bears; mules, ligers are not examples)
- Population: A group of individuals of the same species living in a specific area at the same time. Population ecologists study how populations change in size and distribution over time. Factors affecting populations include: competition for resources and environmental changes.
- Community: Populations of different species interacting in a specific area. Ecologists study interactions between species and how those affect populations. Community interactions include predator-prey relationships and competition. Abiotic factors like sunlight and moisture also affect community structure.
- Ecosystem: All biotic (living) and abiotic (non-living) factors in a given environment. The biosphere is the largest ecosystem, encompassing all parts of Earth suitable for life, including abiotic components. Populations are not randomly distributed throughout the biosphere; distribution is influenced by environmental factors.
- Environment: Everything affecting an organism, and everything that the organism affects. The environment includes both biotic (living) and abiotic (non-living) factors. Components within the environment are important for understanding the distribution of organisms and how species interact.
- Ecology: The study of ecosystems, communities, populations, and how biotic and abiotic factors influence them.
- Morphology: Physical characteristics of an organism affected by environmental conditions.
- Adaptation: An adaptation is a physical or behavioral feature that enhances an organism's chances of survival and reproduction in a specific environment.
Pre-Assessment
- Ecosystems with higher biodiversity are not necessarily more fragile.
- Natural ecosystems generally have higher biodiversity than artificial ones.
- Introducing exotic species can either increase or decrease biodiversity and may negatively impact existing organisms.
- An organism's traits are determined by both its genes and the environment.
- Most populations with significant numbers of organisms display variation in their genetic make up.
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