Unit Test — Unit test Answers

Interactions between organisms and their environment impact the organism’s overall population. The jaguar Panthera onca is the largest cat in North America. It is found in areas across the Southwest, including Arizona, New Mexico, and Texas. It is a carnivore that has powerful jaws and sharp teeth and preys on fish, turtles, and many smaller mammals. Which shows the relationship between the jaguar and turtles?

Which of the following is not an example of mechanical control of nonnative species?a.pullingb.inspectionsc.net barriersd.mowing

Review the picture below.Which would be the most accurate title for this picture?

Consider the two male oryx that are shown below.Which of Charles Darwin’s main points is depicted in the image?

Which of the following is an example of reproductive isolation?

Which determines carrying capacity?

Which type of selection leads to increased phenotypic and genetic variation?

Ash trees are being removed when they show signs of the ash borer, a parasite that affects only ash trees and kills them off. What best explains why the ash trees are being cut down?

Which best illustrates a result of natural selection?

How would an increase in nest sites affect a population of pigeons?

Invasive species often unbalance the ecosystems into which they are introduced because _______.a.they did not co-evolve with the natural species and lack natural controls, like predatorsb.they breed quickly and have the potential to overpopulate an areac.they consume local resourcesd.none of the above

Less than 0.1% of the energy in a food chain generally makes it from the sun to quaternary consumers.

Which of the following human activities most likely resulted in the growth of the North American deer population?a.hunting bisonb.clearing land for farmingc.hunting wolvesd.city building

A hunter illegally kills a wolf in Yellowstone National Park and attempts to bring the wolf's skull back to Florida. Which law is the hunter violating?

Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at different weights.Which statement is a valid claim that could be made using the data in the graph?

Which best describes biogeographic isolation?

Which best describes what is occurring in this population of squirrels?Number of Squirrels Entering and Leaving a Population after 1 YearCause of changeNumber of squirrelsDied from predation2Born4Immigration10Left to find food3Died from disease8Left to find a mate3

The Serengeti plains are part of the African savanna ecosystem and are home to a variety of different species of plants and animals. The Serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. Which type of limiting factors does the seasonal drought in the Serengeti plains affect?

Horses and zebras can be bred to produce a zorse, which is infertile. Which is most likely the reason zebras and horses are considered separate species?

Which of the following is not a way that nonnative organisms are introduced to new aquatic ecosystems related to commerce?a.cargo ship hullsb.recreational boatsc.escape from aquariumsd.migration