Exam 34: An Interactive Living World 1: Populations in Ecology

Studying the variations in the number of carp in Lake Erie over a 20-year period would be an example of studying ecology at which level?

K-selected species are also called equilibrium species.

Except for the period during which the bubonic plague occurred,the human population demonstrated logistic growth from the Middle Ages until about 50 years ago.

A community ecologist might study:

A friend tells you that vintners use yeast that produce alcohol to turn grape juice into wine.He also observes that wine must still have living yeast in it because vintners don't pasteurize wine to kill the yeast.To make wine himself,he explains,he added wine to grape juice with the expectation that the yeast would turn the juice into wine.It didn't work,and your friend wonders why not.In terms of population ecology,what can you explain to your friend about the death of his yeast?

What is the total fertility rate number associated with zero population growth,and why?

Most insects would be typical of which survivorship curve category?

From the time of the industrial revolution until about 50 years ago,the human population growth rate most closely resembles:

The total fertility rate is defined as the average number of children born to each woman in a population.

The intrinsic rate of increase of a population is usually referred to as "r."

What would be a reasonable conclusion about a country with a fertility rate of about 1.6?

"Life is a lottery and it makes sense simply to buy many tickets" is a strategy for organisms that exhibit:

The average amount of time that passes between the birth of a woman and the birth of her child is called:

Which of the following is a density dependent limiting factor?

A country's fertility rate suggests zero population growth,but it shows an increase of 20-30 percent over 50 years.What might account for this?

The job of an ecologist is to preserve the natural world.