With regard to its rate of growth, a population that is growing l...

Question

With regard to its rate of growth, a population that is growing logistically
a. grows fastest when density is lowest.
b. has a high intrinsic rate of increase.
c. grows fastest at an intermediate population density.
d. grows fastest as it approaches carrying capacity.

Accepted Answer

Hi everyone. Here's our next problem. It says the blank of an environment is the maximum number of individuals of a species that it can carry and sustain. So when we think about that given environment, how many individuals of a specific species can it carry and sustain? It's important to have a species because obviously different species, environment can sustain different numbers of them. So this is called the carrying capacity. And that's hero's choice A. So that's fairly intuitive to understand the amount it can handle with the given resources. Well, let's just work through our other answer choices to understand why they're not the correct answers. So we've got choice B is biotic potential and the biotic potential of a species is the number of individuals that a species can produce at its highest rate in an ideal habitat. So without any sort of disadvantages in the habitat shortages, shortages of resources or other issues. How many offspring can this species theoretically produce? But that's not what we're looking for. Since we're looking for how much in the in the less ideal environment, the actual conditions of a given environment, how much of the population can be sustained. So that's why Choice B is not correct. So now let's go to choice. E resistance and resistance isn't a term you use by itself and biology. Um But there is a term called environmental resistance and these are factors that limit and organisms biotic potential. So biotic potential is that ideal number. That ideal highest reproduction number. Um The environmental resistance would be those factors that limit that potential, but not our answer here, and finally, choice the replacement rate and the replacement rate. And again, this is a fairly intuitive concept is that fertility rate at which there's enough Children born to sustain the population level, so enough births are happening to sustain the number of deaths and maintain a constant level. But now what we're looking for. So not choice D. So again, the choice a carrying capacity of an environment is the maximum number of individuals of a species that it can carry and sustain you in the next video.

With regard to its rate of growth, a population that is growing logistically a. grows fastest when density is lowest. b. has a high intrinsic rate of increase. c. grows fastest at an intermediate population density. d. grows fastest as it approaches carrying capacity.

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