APES Unit 1.1: Ecosystems

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20 Terms

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what is an organism?
It is an individual that has a cellular structure and can independently perform basic life functions.
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symbiosis
A close and long-term interaction between two different species.
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mutualism
It is when two organisms both benefit from the interaction.
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commensalism
It is a relationship that benefits the organism, and the other organism isn’t affected by it.
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ammensalism
It is an interaction between organisms whereby one organism is suffering, and the other isn’t affected by it.
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parasitism
One organism lives in a host and benefits from it by causing harm.
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what are the two types of predation?
* Herbivores
* True Predators (carnivores)
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what are the two types of competition?
* Intraspecific
* Interspecific
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what are the four types of partitioning?
* Resource
* Temporal
* Spatial
* Morphological
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what is a predator-prey relationship?
A biological interaction where the predator hunts and kills another organism, which is the prey, for food.
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do parasites kill their host?
No, parasites who use a host does not intend to kill their host. However, they harm their host as they live within.
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parasitoid
the eggs are laid inside the host and will eventually kill the host.
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competitive exclusion principle
Species who compete for the same limited resource cannot coexist at constant population levels.
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resource partitioning
The species use the same resource in different ways to reduce competition.
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temporal partitioning
The species use the same resources, but at different times.
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spatial partitioning
The species live specific areas or habitats where the desired resource is just within their range.
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morphological partitioning
When different species divide or share their resources based on their body feature.
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what does intraspecific competition mean?
Competition between the same species
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what does interspecific competition mean?
Competition of different species
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limiting factor
An abiotic factor limits or prevents the growth of a population.