Multiple Choice
In the context of ecology, what organisms obtain their nutrition by consuming other organisms?
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48. Ecology
Introduction to Ecology
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In an ecosystem without herbivores, which of the following is most likely to occur?
A
An increase in plant biomass due to lack of grazing
B
A decrease in decomposer activity due to less organic matter
C
A decrease in plant biomass due to overgrowth
D
An increase in carnivore populations due to more available prey
Verified step by step guidance1
Understand the role of herbivores in an ecosystem: Herbivores consume plants, which helps control plant biomass and influences the flow of energy through the ecosystem.
Consider the impact of removing herbivores: Without herbivores, plants are not being grazed, which can lead to changes in plant biomass.
Analyze the potential outcomes: Without grazing, plant biomass might increase due to lack of consumption, or decrease due to overgrowth and competition for resources.
Evaluate the effect on decomposers: Decomposers break down organic matter. If plant biomass increases, there might be more organic matter available, potentially increasing decomposer activity.
Consider the impact on carnivores: Carnivores rely on herbivores as prey. Without herbivores, carnivore populations might decrease due to less available prey.
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