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Keystone species: Quiz

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Question 1: A classic keystone species is a small predator that prevents a particular ________ species from eliminating dominant plant species.
PredationCarnivoreHeterotrophHerbivore

Question 2: [13] Even grazing species such as Plains bison, ________, and Mule deer have shown a proclivity for grazing on the same land used by prairie dogs.
MooseBighorn SheepPronghornMountain goat

Question 3: Paine coined the phrase to explain the relationship between Pisaster ochraceus, a species of starfish, and Mytilus californianus, a species of ________.
AbaloneMusselScallopOyster

Question 4: Similarly, sea otters in ________ keep sea urchins in check.
Coral reefMarine biologyKelp forestHydrothermal vent

Question 5: It has become a very popular concept in ________.
PaleontologyEcologyBotanyConservation biology

Question 6: The first stage of the transfer is performed by ________, rich in nitrogen, sulfur, carbon, and phosphorus, who swim up rivers, sometimes for hundreds of miles.
Crab fisheriesChinook salmonWild fisheriesSalmon

Question 7: In the African savanna, the larger herbivores, especially the ________, shape their environment.
Asian ElephantLionElephantHippopotamus

Question 8: The bears then capture the salmon and carry them onto dry land, dispersing nutrient-rich ________ and partially-eaten carcasses.
FecesHuman fecesCoprophagiaToilet

Question 9: Another ecosystem engineering keystone species is the ________, which transforms its territory from a stream to a pond or swamp.
North American BeaverEuropean BeaverBeaverGerman language

Question 10: They transfer nutrients from the oceanic ecosystem to the ________ ecosystem.
Temperate broadleaf and mixed forestsTreeOld-growth forestForest







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