How do keystone predators control the entire community (top-down control/trophic cascades)? Group of answer choices They decrease the primary producer population which reduces the abundance of herbivores and carnivores. They increase the size of primary producer populations, which increases the size of herbivore populations. They reduce the size of carnivore populations, which increases the size of herbivore populations. They reduce the size of herbivore populations, which allows primary producer populations to increase.
Added by Lidia H.
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This means that they have a cascading effect on the entire food chain, starting from the top predator down to the primary producers. Show more…
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Predators that are keystone species can maintain species diversity in a community if they a. competitively exclude other predators. b. prey on the community's dominant species. c. reduce the number of disruptions in the community. d. prey only on the least abundant species in the community.
Predators that are keystone species can maintain species diversity in a community if they (A) competitively exclude other predators. (B) prey on the community's dominant competitors. (C) reduce the number of disruptions in the community. (D) prey on the least abundant species in the community.
Explain why the hunting of large, top predators such as sharks or wolves, endanger the entire ecosystems in which they live. a. The disappearance of top predators results in unrestricted multiplication of producers. Producers will overgraze primary consumers. b. If a top predator disappears, the primary consumers will multiply without restriction, but producers will not be affected. c. If a top predator disappears, producers will multiply without restriction. d. The disappearance of top predators results in unrestricted multiplication of primary consumers. Primary consumers will overgraze producers.
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