Exam 54: Ecology of Individuals and Populations

The rate at which a population of a given species will increase when no limits are placed on its rate of growth is called its

Effects that are dependent on the size of the population and regulate the growth of populations are called ________ effects.

Life history adaptations of ________ populations are characterized by an early age of first reproduction and short maturation time and life span.

-What often describes organisms with a Type III life history?

A group of international students is having a heated discussion in the dining hall."Your country needs to get its population under control!" asserts a student from the United States."Perhaps," replies the Indian student,"But your country ________."

A group of population members all of the same age is called a ________.

There are three aspects of entire populations that are important and often studied.Select the best choice from the ones listed.

An unscrupulous dog breeder has been selecting for dogs that have very large litters,with the goal of maximizing profits.Why might this strategy be counterproductive?

-What is the Allee effect?

An r-selected species is more likely to become an invasive pest than a K-selected species.

What kind of population spacing would you expect for a species that is strongly territorial?

You and your friend are on vacation at Yellowstone Park.The plaque in front of a sulfur hot spring reads: "This sulfur spring is 80°C,has a pH of 2,and contains large amounts of sulfur which is oxidized by Sulfolobus species of archaea." Your friend is excited."Boy,if those microbes are that tough they should be easy to grow in the lab.I think I'll work with those for my summer project." What do you think?

A farmer's land includes a wilderness area that is home to an endangered species of bird.He wants to sell the land to a developer,and you have been hired to evaluate the environmental concerns."This little patch of land is not crucial for the bird species!" the farmer says,"In fact,my land is surrounded by several other wilderness patches that also have that bird." You reply: "It is possible that your land acts as the ________ and the other areas are ________.If that's the case,development would be devastating to the population."

Which of the following describe source-sink metapopulations?

-Which of the following statements about the graph is true?

A zoo in Southern California has been successfully breeding arctic wolves and they want to exchange some of their extra wolves for kangaroos from a zoo in southwestern Australia.Since it is July,it is quite cold in the other zoo compared to Southern California.What discussion might the zookeepers have about transferring the wolves?

What would be the best approach to curbing excessive human population growth?

The statistical study of populations including sex ratio,age structure,and predicting growth rates is called ________.

Most density-dependent factors show negative feedback relative to population size.Which one of the following is more likely to show positive feedback relative to population size?

Within a genus that normally produces large numbers of offspring,one particular species evolves maternal care behavior.What do you predict will happen to the survivorship curve?