White bedstraw naturally lives in alkaline soils, and heath bedstraw naturally lives in acidic soils. Tansley tested whether these closely related species compete and how the might coexist. Schematic results of his experiments are shown below. These esults support that__. Heath bedstraw grown alone White bedstraw grown alone Both species grown Relyea, Ecology, 9e, © 2021 W. H. Freeman and Company

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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White bedstraw naturally lives in alkaline soils, and heath bedstraw naturally lives in
acidic soils. Tansley tested whether these closely related species compete and how
the might coexist. Schematic results of his experiments are shown below. These
results support that_
Heath
bedstraw
grown alone
White
bedstraw
grown alone
Both species
grown
together
239
Alkaline soil
✓Closely related species compete
Closely related species don't compete
Acidic soil
Closely related species can co-exist by living on different soil types
Relyea, Ecology, 9e, © 2021 W. H. Freeman and Company
Transcribed Image Text:White bedstraw naturally lives in alkaline soils, and heath bedstraw naturally lives in acidic soils. Tansley tested whether these closely related species compete and how the might coexist. Schematic results of his experiments are shown below. These results support that_ Heath bedstraw grown alone White bedstraw grown alone Both species grown together 239 Alkaline soil ✓Closely related species compete Closely related species don't compete Acidic soil Closely related species can co-exist by living on different soil types Relyea, Ecology, 9e, © 2021 W. H. Freeman and Company
This question involves the principle of competitive exclusion
In a stream ecosystem, two species of aquatic plants rely on available nitrogen and
phosphorus as nutrients.
Under what conditions would these two species, in competition for two nutrient
resources, be prevented from coexisting?
When both species are able to persist at equivalent levels of nitrogen and phosphorus.
When both species are able to survive at lower levels of nitrogen but require higher
levels of phosphorus.
When one species is better able to survive at low levels of nitrogen, while the other
species is able to survive with low levels of phosphorus.
When one species is better able to persist at lower levels of nitrogen and phosphorus,
while the other species requires high levels of both.
Transcribed Image Text:This question involves the principle of competitive exclusion In a stream ecosystem, two species of aquatic plants rely on available nitrogen and phosphorus as nutrients. Under what conditions would these two species, in competition for two nutrient resources, be prevented from coexisting? When both species are able to persist at equivalent levels of nitrogen and phosphorus. When both species are able to survive at lower levels of nitrogen but require higher levels of phosphorus. When one species is better able to survive at low levels of nitrogen, while the other species is able to survive with low levels of phosphorus. When one species is better able to persist at lower levels of nitrogen and phosphorus, while the other species requires high levels of both.
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