Exam 53: Introduction to Ecology: Population Ecology

A group of cacti on a sun-exposed slope have greater reproductive success than cacti on a shaded slope. The habitat on the sun-exposed slope can be classified as which of the following?

Figure 53-1 ​ ​ The graph in the accompanying figure would best be described as:

Interference competition is also called contest competition.

An exponential growth curve has a J shape.

Figure 53-4 ​ ​ Based on the accompanying figure, which of the following age intervals has the highest death rate?

Organisms such as oysters or fish that produce millions of eggs per year may be characterized as:

A killing frost is an example of a density-independent factor.

Territoriality often results in clumped dispersion.

The percentages of a population at different ages are known as the:

Two members of the same species compete for a limited resource, resulting in equal sharing of the limited resource. What is this called?

The most common spacing is random dispersion.

Sketch an exponential growth curve with correctly labeled axes. Identify two organisms and describe the conditions under which they might demonstrate such growth.

Which of the following is NOT a condition that is likely to lead to uniform population dispersion?

Figure 53-2 ​ ​ Refer to the accompanying figure. At which point are there few environmental limits on the population?

Which set of values would result in a population with a growth rate of zero?

Natural selection acts most directly on:

Explain the difference between semelparous and iteroparous species. Provide an example of each.