Guided course 03:43Competitive Exclusion and Niche DifferentiationJason Amores Sumpter1443views11rank
04:34APBio Ch 45 Pt. 1: Community Ecology~Community Structure, Interactions & DevelopmentWinnie Sloan488views
03:23Symbiosis: Mutualism, Commensalism, and Parasitism | The Biology Central | EcologyThe Biology Central760views
05:28Ecological Relationships-Competition- Predator and Prey- SymbiosisMooMooMath and Science1084views
04:17Interspecific Interactions | Ecology 03 | Biology | PP Notes | Campbell 8E Ch. 54.1Patricia Peng852views
Multiple ChoiceUnder which of the following circumstances would interspecific competition be most obvious? 509views
Multiple ChoiceWhen goats were introduced to an island off the California coast, the goats inhabited the same areas and ate the same plants as the native deer. The deer population dwindled and finally disappeared. This is an example of __________. 580views
Multiple ChoiceFlounder is a type of fish that looks like the seafloor. This is an example of __________. 608views
Multiple ChoiceThe flower fly resembles a honeybee, but the flower fly has no stinger. This is an example of what natural phenomenon? 499views
Multiple ChoiceThe poison-arrow frogs Dendrobates of tropical America are all brightly colored and have very similar patterns. Although each species is distasteful to predators and all possess toxic skin secretions, some of the species live quite separately from the others. The adaptive relationship among these species is best termed __________. 383views
Multiple ChoiceCertain species of acacia trees in Central and South America have hollow thorns that house stinging ants, which attack anything that touches the tree. The ants feed on nutrients produced by the acacias. This is an example of __________. 433views
Multiple ChoiceWhat is the key difference between a dominant species and a keystone species? 1908views
Multiple ChoiceA species of malaria-carrying mosquito lives in a forest in which two species of monkeys, A and B, coexist. Species A is immune to malaria, but species B is not. The malaria-carrying mosquito is the chief food for a particular kind of bird in the forest. If all these birds were suddenly eliminated by hunters, which of the following would be an immediately observable consequence? 693views
Textbook QuestionFill in the blanks in the table below summarizing the interspecific interactions in a community. 388views
Textbook QuestionCompare and contrast the species interactions of mutualism, predation, and competition.701views
Textbook QuestionTo ensure adequate nitrogen for a crop, a farmer would want to decrease _________ by soil bacteria. a. nitrification b. denitrification c. nitrogen fixation d. a and c305views
Textbook QuestionExplain how seed dispersal by animals is an example of mutualism in some cases.308views
Textbook QuestionWhich of the following is an example of a mutualistic relationship? a. moles catching and eating earthworms from the moles' underground tunnels; b. cattails and reed canary grass growing together in wetland soils; c. cleaner fish removing and eating parasites from the teeth of sharks; d. Colorado potato beetles consuming potato plant leaves; e. more than one of the above613views
Textbook QuestionTruffles (the fungi, not the chocolates) are the reproductive bodies of ascomycetes that form mycorrhizae with certain tree species. They are highly prized by gourmets for the delicious scent they add to food. Because truffles grow underground, they are difficult to find—human noses are not sensitive enough to locate them. Many animals, however, are excellent truffle hunters and eagerly consume the fungi. Why would these fungi produce a scent that attracts fungus-eating animals?481views
Textbook QuestionSCIENTIFIC THINKING As you learned in symbiotic relationships with mycorrhizal fungi are found in almost all present-day plant lineages. Mosses are a major exception—most mosses lack mycorrhizal associations. Assuming that mycorrhizae were a key factor in the colonization of land by plants, propose an explanation for the absence of mycorrhizae in present-day moss lineages.383views
Textbook QuestionThe carnivorous plant Nepenthes bicalcarata ('fanged pitcher plant') has a unique relationship with a species of ant—Camponotus schmitzi ('diving ant'). The diving ants are not digested by the pitcher plants, but instead live on the plants and consume nectar. Diving ants also dive into the digestive juices in the pitcher, swim to the bottom, and capture and consume trapped insects, leaving uneaten body parts and ant feces behind. What nutritional impact do the ants have on fanged pitcher plants? Do the pitcher plants derive any nutritional benefit from this relationship?571views