Q5. Based on the data in the table below, which of the following most likely cor
ID: 88810 • Letter: Q
Question
Q5. Based on the data in the table below, which of the following most likely correctly identifies the limiting and secondarily limiting nutrients for species 3? Results of Nutrient Addition Experiments, Round Two: Species 1 Species 2 Species 3 Nutrient Input Pop N P Si Pop N P Si Pop N P Si Rate Baseline 100 240 100 5000 80 3000 50 4000 50 4000 55 120 (1x all 200 242 101 4998 79 6005 49 4003 50 4002 54 122 2x N 2x P 100 240 201 4995 158 2999 48 3998 50 3998 110 100 100 29 99 9999 81 3002 49 7998 94 3995 22 150 2x Si N is the primary limiting nutrient, P is secondarily limiting P is the primary limiting nutrient, Si is secondarily limiting Si is the primary limiting nutrient, P is secondarily limiting Si is the limiting nutrient, N is secondarily limitingExplanation / Answer
Answer: 5. Option A.
The limiting factors are selected as N and P because the population growth is controllled despite the addition of nutrient concentration in higher quantities. From the comparison of given data for P, N and Si we can see that increasing concentration of N and P does not cause any increase in given population size. Hence, primary limiting nutrient is N while the secondarily limiting one is P.
Answer 6. Option C.
Using Tilman's model of resource competition we can see that only the pair of 1 and 3 can coexist. This is because in other given pairs of 1 and 2, as well as 2 and 3 the species will be competing for same nutrient. This competition will lead to extinction of one of the two species. Hence, the species given in option A, B or D cannot coexist.
Answer 7: Option A
From the given data we can see that the sample sized taken for species 4 are much larger than the sample sizes of species 5. Thus, species 4 will outcompete as it stabilizes population size which is much larger than species 5.
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