Exam 3: Evolution, Biodiversity, and Population Ecology

Choose the item that best matches each item in the following: -Species occurring in only one area

A species has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. Which of the following will be true of this speciesʹ response to natural selection?

A population of quail lives in an area of prairie grasslands. In good years, a pair of quail can have four clutches of young, with as many as 12 to 14 eggs in each clutch. Despite this, the population size remains stable over the long term. Discuss the population structure, its potential for growth, and its possible limiting factors, using at least four of the terms you learned in this chapter.

-Assuming the populations are of equal size, the length of time necessary for significant divergence to take place in the populations depends on _____________

Biodiversity is ______________

When the organisms of a particular population seek habitats or resources that are unevenly spaced, the distribution of the individuals in the population is ______________

Phylogenetic trees ______________

Of the following, ______________ are the major factors that determine a populationʹs growth rate.

Choose the item that best matches each item in the following: -Number of individuals within a population per unit area

Is a carrying capacity a fixed entity? Discuss the role of humans in regulating carrying capacity for the human species and in altering the carrying capacity for other species.

A small group of leaf-feeding beetles locates a field of snap beans, one of the preferred plants for this species. At first, the population grows rapidly in the snap bean field, but as the beetle population grows larger, predators, such as spiders and birds, discover the beetles and start to remove individuals from the population. Competition for mates, food, and oviposition (egg-laying) sites intensifies for the individuals in the beetle population as population density increases. A fungal disease also starts to kill many of the beetles. The population no longer grows rapidly but levels off. How would you describe the factors limiting the beetle population?

The functional role of a species in its community is its ______________

A coyote, which can alter its food intake to match seasonal abundance of plants, fruits, or small animals, is considered to be ______________

Which of the following is true?

Populations lacking any environmental resistance tend to increase by ______________

At Hakalau Forest in ______________, ranchland is being restored to forest, invasive plants are being removed, and native ones are being planted, and native birds are being protected while new populations of them are being established.

Heavy rains and mudslides cause a river to change course, isolating two groups of lizards of the same species from one another. Over a long period of time ______________

Extinction is ______________

A species of bird had an original range covering the entire eastern half of the United States from New England west to the Mississippi and then south to Florida. During a period of glaciation, the eastern part of the population was cut off from the western part for 2000 years. Then the glacier melted and the birdsʹ range was reestablished. During the separation, the western birds evolved a slightly different song and a darker wing color. Ornithologists are now studying this species to determine whether speciation has taken place. What evidence will they look for in their study?

A populationʹs age structure generally ______________