r- and K-selection refer to: (Select all that apply) A) life history traits that
ID: 177593 • Letter: R
Question
r- and K-selection refer to: (Select all that apply)
A) life history traits that are related to population growth rate vs. competition for resources
B) intrinsic growth rate and carrying capacity in the logisitic model
C) per-capita growth rate and mortality in the exponential growth model
D) shapes of the age-vs.-mortality-rate plots for r- and K-selected species
E) theoretical maximum growth rate and observed growth rate
F) environmental conditions that favor dispersal strategies vs. survival strategies
Explanation / Answer
The r/K selection theory is based upon quantitative and qualitative enhancement of a population growth where r selection effectively describes quantitative growth of a population by growing in number. The r selection is the one which favours high population densities in an area. On the other hand, K selection is the mode of selection which suggests sustainable development of organisms of a species to live at a location with maximum utilization of the natural resources so that they might survive and their descendnets might also survive. Iin a K selection theory, the individuals show maximum or near maximum carrying capacity. Graphically, these entitites are denoted by a graph between number of individuals in a time span at a given location. The survivorship curve can also be plotted between number of inviduals surviving vs organism's age.
Thus, this information suggests that choices A, B,C, D and F are correct.
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