1) The carrying capacity (K) is the maximum population size that can be supported or sustained by a given environment. Which of the following statements about the carrying capacity is NOT true?
a. When a population overshoots K, individuals die due to lack of resources.
b. Once a population reaches its carrying capacity, the size of the population remains constant.
c. We can think of K as some "average" value that a given environment can support.
d. Environmental fluctuations cause the carrying capacity to fluctuate over time.
I am between b and c but not sure
2) Brown-headed cowbirds lay eggs in the nests of other grassland birds, thereby forcing the other species to hatch the eggs and raise the young.
The type of symbiotic relationship between the cowbirds and the other species of birds is
a.predation
b. commensalism
c. mutualism
d. parasitism
3) In the grasslands of Alberta, most of the species of grasses and weeds have fungi on their roots. The fungi provide minerals and moisture to the plants’ roots, while the plants provide carbohydrates that feed the fungi.
The type of symbiotic relationship between the fungi and the plants is
a. mutualism
b. parasitism
c. commensalism
d. predation
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