Question

Lake tefillin is a large freshwater lake that is popular for recreation. one year, the managers of the lake introduced a population of rainbow trout to the lake. the graph shows the growth of the population over several years.

which best describes the growth pattern of the rainbow trout?
a) exponential growth,because the lake provides unlimited resources to the population
b) logistic growth, because the effect of limiting factors increased with the population size
c) exponential growth, because limiting factors are always affecting the population
d) logistic growth, because the lake provides unlimited resources until the population reaches carrying capacity

Answer 1

b) logistic growth, because the effect of limiting factors increased with the population size

Step-by-step explanation:

The S-shaped curve in the graph above depicts a typical logistic growth pattern.

In this type of growth pattern, there is an initially exponential growth at the beginning when limiting factors of growth are minimal. As the initial population increases, resources for growth become limited. Growth starts to slow down. And at some point, insignificant increase in population growth sets in. This is depicted on the graph where the tail end of the curve levels of and fluctuates.

This logistic growth curve shows that, over the years, the limiting factors that slows down growth of Rainbow trout population increases as the population of Rainbow trout increased. This led to the growth rate slowing down and eventually levels up with no real significant change in population size of Rainbow Trout.