Podcast
Questions and Answers
Which of the following ecological relationships is characterized by both organisms benefiting from the interaction?
Which of the following ecological relationships is characterized by both organisms benefiting from the interaction?
- Predation
- Competition
- Parasitism
- Symbiosis (correct)
Interspecies competition differs from intraspecies competition in that interspecies competition:
Interspecies competition differs from intraspecies competition in that interspecies competition:
- Is always tougher than intraspecies competition.
- Occurs between individuals of different species. (correct)
- Does not involve competition for mates.
- Occurs between individuals of the same species.
Which of the following scenarios best illustrates a predator-prey relationship?
Which of the following scenarios best illustrates a predator-prey relationship?
- A lion hunting and consuming a zebra. (correct)
- Bees pollinating flowers while collecting nectar.
- Two bird species nesting in the same tree.
- A fungus growing on a plant trunk, obtaining nutrients.
Parasitism is a type of interaction where:
Parasitism is a type of interaction where:
Lichens are an example of a permanent symbiotic relationship. Which of the following describes why this relationship is considered 'permanent'?
Lichens are an example of a permanent symbiotic relationship. Which of the following describes why this relationship is considered 'permanent'?
Plant species often compete with each other for access to sunlight. This is an example of:
Plant species often compete with each other for access to sunlight. This is an example of:
A flea feeds on the blood of a dog. Which type of interaction does this exemplify?
A flea feeds on the blood of a dog. Which type of interaction does this exemplify?
Competition can be considered an important evolutionary force because it can lead to:
Competition can be considered an important evolutionary force because it can lead to:
Flashcards
Harmful Interactions
Harmful Interactions
Interactions between organisms where one benefits and the other is harmed.
Competition
Competition
An ecological relationship where organisms try to use the same limited resources.
Intraspecies Competition
Intraspecies Competition
Competition between individuals of the same species.
Interspecies Competition
Interspecies Competition
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Predation
Predation
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Parasitism
Parasitism
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Symbiosis (Mutualism)
Symbiosis (Mutualism)
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Lichens
Lichens
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Study Notes
- Abiotic factors of the environment affect organisms
- Interactions between organisms also affect one another
Types of Interactions
- Interactions can be harmful, benefiting one organism while harming another, like competition, predation, and parasitism
- Interactions can be mutually beneficial
- Interactions can be neutral
Competition
- Ecological relationship where different organisms or populations try to use the same food and space resources
- Occurs between individuals of the same species (intraspecies) and different species (interspecies) that have common requirements
- Intraspecies competition is tougher than interspecies
- Intraspecies competition tougher because the same species depends on the same type of food, same space, and the same construction material
- Competition occurs when organisms compete for food, space, and finding a sexual partner
- Competition is an important evolutionary force
- Plants can grow taller by competing with each other for light
Predation
- Harmful interaction when one individual of one species (predator) eats an individual of another species (prey)
Parasitism
- An organism feeds on food readily available from its host, but usually does not destroy it
- Parasitic fungi that grow on the trunks of plants, like Polypores, exemplify parasitism
Symbiosis
- Mutually beneficial interactions occur when individuals of different species interact beneficially
- Symbiosis involves two species where each can live, develop, and reproduce only in the presence of the other species
- Symbiosis can be permanent or temporary
- Lichens exemplify a permanent interaction of symbiosis
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Description
Learn about the different types of ecological interactions between organisms, including competition, predation, and mutualism. Understand how these interactions can be harmful, beneficial, or neutral, and their impact on evolution. Intraspecies competition is tougher than interspecies.
