Exam 33: Populations in Ecology

Explain how you would calculate r for a population.

By the end of the twenty-first century, the human population is expected to be:

Exponential growth, experienced occasionally by populations of organisms, ________.

The human population is currently following a J-shaped curve. This means that the population is currently growing:

What has been the effect of eliminating the natural predators on deer in the United States?

An arithmetic growth curve will have a steeper upward slope than an exponential growth curve.

In less-developed countries, the population pyramid tends to be shaped like.

What are the three shapes of survivorship curves, and what does each one tell us about the population? Give an example of a species for each survivorship curve.

If the population of mountain lions adds 10 new lions each year for 20 years, we would classify this type of growth as:

Refer to the figure above and then answer the question that follows. -The intrinsic rate of increase:

Which of the following factors reduces the generation time of a human population?

If you subtract the death rate from the birth rate of a population, you will calculate:

During succession, there is a general trend toward increased species diversity.

Human populations have shown a rapid growth increase in the last century because of:

Logistic growth:

The carrying capacity of a habitat can transform a J-shaped curve into an S-shaped curve.

An exponential increase in a population is the same as an arithmetic increase.

For each of the scientific studies described in the questions that follow, choose the scale of the study. -Understory herb abundances and species diversity in pine plantations under different management regimes in North Carolina

List at least three differences between an r-selected species and a K-selected species.

Draw a typical population pyramid for (a) a developed country and (b) a developing country.