Organisms often compete for limited resources such as food and habitat. Organisms competing with others of the same species are said to be competing intraspecifically. Organisms competing with members of a different species are said to be competing interspecifically. Two scientists discuss the effects of each.
Interspecific competition is one of the chief reasons that organisms evolve into specially adapted “harvesters.” If two species of organisms are competing for a single resource, one species is bound to be the better competitor, and will drive the other species to extinction. Because certain groups are excluded from certain resources, species will diverge and develop specialized traits unique to their feeding environment. Should another species try to invade this feeding environment, the already adapted indigenous species will outcompete and exclude this invasive species.
Several species may inhabit the same feeding environment. Depending on the population of each of these species, one may observe various intensities of both interspecific and intraspecific competition. If more than one species is abundant in a single feeding environment, interspecific competition drives the population dynamics until one species outcompetes the others. At this point, intraspecific competition becomes a dominant force, as members of the single abundant species must outcompete each other for food resources. After some time, this heightened intraspecific competition may allow another species to invade the feeding environment and reproduce. This then leads again to interspecific competition. This intra-interspecific competition cycle will then continue.
0 of 5 Questions completed
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
0 of 5 Questions answered correctly
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Which statement, if true, best supports the viewpoint of Scientist 1?CorrectIncorrect
New evidence has shown that aphids will travel to new plant hosts, regardless of the presence of non-aphid species, when a threshold population density is reached. This new evidence supports the views held by:CorrectIncorrect
According to the passage, which of the following would be considered a non-limiting factor of species populations?CorrectIncorrect
According to Scientist 2, if several species are interacting on a single limited resource, one would expect to observeCorrectIncorrect
Scientist 1 implies that specialized traits areCorrectIncorrect