Module 3: EI Vocabulary

What is biodiversity?

• The final stable stage of ecological succession

• The variety of life and its processes, including the variety of living organisms, the genetic differences among them, and the communities and ecosystems in which they occur

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• The composition of a community, including the number of species in that community and their relative numbers

What is a climax community?

• The variety of life and its processes

• The final stable stage of ecological succession that may be reached in an undisturbed community

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• An ecological relationship in which two organisms compete for the same resources

What is commensalism?

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• An ecological relationship in which two organisms compete for the same resources

• The composition of a community, including the number of species in that community and their relative numbers

• A principle of ecology stating that two different species cannot occupy the same niche in the same place for very long

What does the competitive exclusion principle state?

• Two different species cannot occupy the same niche in the same place for very long

• The final stable stage of ecological succession that may be reached in an undisturbed community

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• The variety of life and its processes

What is ecological succession?

• The final stable stage of ecological succession that may be reached in an undisturbed community

• Changes through time in the numbers and types of species that make up the community of an ecosystem

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• An ecological relationship in which two organisms compete for the same resources

What is a foundation species?

• A species that modifies the environment so that it can support other species

• The final stable stage of ecological succession that may be reached in an undisturbed community

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• An ecological relationship in which two organisms compete for the same resources

What is community structure?

• The composition of a community, including the number of species in that community and their relative numbers

• The final stable stage of ecological succession that may be reached in an undisturbed community

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• An ecological relationship in which two organisms compete for the same resources

What is a competitive relationship in ecology?

• An ecological relationship in which two organisms compete for the same resources

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• The composition of a community, including the number of species in that community and their relative numbers

• A principle of ecology stating that two different species cannot occupy the same niche in the same place for very long

Which of the following best describes the competitive exclusion principle?

• Two different species cannot occupy the same niche in the same place for very long

• The final stable stage of ecological succession that may be reached in an undisturbed community

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• The variety of life and its processes

What is the primary focus of biodiversity?

• The variety of life and its processes, including the variety of living organisms, the genetic differences among them, and the communities and ecosystems in which they occur

• The final stable stage of ecological succession that may be reached in an undisturbed community

• A symbiotic relationship in which one species benefits while the other species is neither hurt nor helped

• An ecological relationship in which two organisms compete for the same resources