Interactions Among Organisms Quiz

What defines a community in ecological terms?

• All the organisms in a biome

• All the populations of different species in the same area

• Only the plant species in an area

• Only the animal species in an area

Which of the following is an example of a biotic factor?

• Sunlight

• Soil

• Plants

• Air

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What is a biome?

• A single species in an area

• A geographical region with specific climate and life

• A type of predator-prey relationship

• A community of only plants

In a predator-prey relationship, what happens when the prey population increases?

• Predator population decreases

• Predator population remains the same

• Predator population increases

• Prey population decreases

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What role do keystone species play in their communities?

• They are the largest species

• They have no effect on other species

• They play an important role in maintaining balance

• They only compete for resources

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Which adaptation helps predators catch their prey?

• Camouflage

• Speed

• Hiding

• Mimicry

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What is the main difference between intraspecific and interspecific competition?

• Intraspecific is between different species, interspecific is between the same species

• Intraspecific is between the same species, interspecific is between different species

• Intraspecific is about food, interspecific is about space

• There is no difference

What type of symbiosis occurs when both species benefit?

• Commensalism

• Parasitism

• Mutualism

• Competition

How does parasitism differ from mutualism?

• In parasitism, neither species benefits

• In parasitism, one species benefits while the other is harmed

• In parasitism, both species benefit

• In parasitism, both species are harmed

In what type of environment would competition between organisms likely be most intense?

• Where resources are abundant

• Where resources are limited

• Where there are no predators

• Where there is only one species

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