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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
A relationship that affects the populations of two or more species adversely (negativt) is referred to as ________ competition	interspecific
The Lotka-Volterra equations predict the outcomes of ________ competition under different conditions.	interspecific. Viser 4 mulige udkom: Art 1 udkonkurrerer art 2. Art 2 udkonkurrer art 1. (Begge disse er competitive exclusion) og de to andre viser coexistence (den ene er ustabil ligevægt, hvor den art, som der var mest af i starten normalt overgår den anden. Den sidste mulighed er hvor der sker stabil ligevægt og de to arter eksisterer sammen på et lavere populationsniveau end hvis de levede selv). Lotka-Volterra-ligningerne er en simpel model for, hvordan populationer af rovdyr og byttedyr påvirker af hinanden. Ligningerne er to koblede differentialligninger.
Chemical interaction competition in plants is called ________.	allelopathy (Allelopati er et biologisk fænomen, hvorved en organisme producerer en eller flere biokemikalier, der påvirker spiring, vækst, overlevelse og reproduktion af andre organismer.)
According to the competitive ________ principle, two "complete competitors" cannot coexist.	exclusion
The portion of the fundamental niche that an organism actually exploits in the presence of competitors is called its ________ niche.	realized.
A shift in the morphology, behavior, or physiology of a species in response to resource competition is referred to as ________ displacement.	character
The occupation of space by a sessile organism, such as a barnacle, that precludes the establishment or occupation by another species is referred to as (Besættelsen af plads af en siddende organisme, såsom en snegl, der udelukker etablering eller besættelse af en anden art kaldes)	preemptive competition (præventiv konkurrence)
According to the Lotka-Volterra equations, which of the following is not an expected outcome of competitive interactions between two species?	The populations of both species increase to infinity
In Tilman's experiments with diatoms (kiselalger), what was the outcome when the two species competed for silica (et stof) (section 13.4)?	One outcompeted the other to extinction
According to the figure, when these two species are combined in a culture, what will the outcome be?	P. aurelia wins
Which of the following is a nonresource (or nonconsumable resource) that can influence the outcome of competition among plant species? water, temperature, nitrogen or light ?	temperature
Species A prefers a more dry habitat but grows in a wet habitat. Why might this be?	Species B outcompetes A in the dry habitat
Coexisting species of wild cats differ in the size of their canine teeth, which corresponds to differences in their preferred species of prey. This outcome is most likely the result of ...	resource partitioning (ressource opdeling) (Ressourceopdeling er opdeling af begrænsede ressourcer efter art for at undgå konkurrence i en økologisk niche).
Coyote populations are lower where wolf populations are increasing because	wolves directly compete with coyotes.