Measuring Populations — Unit test Answers
Which of the following species would you most expect to be distributed according to a regular pattern?
Variation of ecological habitats within a species is characteristic of which type of diversity?
Which of the following conditions would lead to a small population size?
For which method of determining population size is the population not aware of the sampler’s presence?
Which of the following statements about logistic growth curves is true?
Which of the following selection pressures is responsible for the limited evolutionary changes experienced by alligators and other crocodilians?
Orange trees planted in a grove or orchard would most likely fall in which category of population distribution?
There are approximately 35,000 bald eagles in Alaska, which covers 586400 square miles. What is the population density for the bald eagles in Alaska?
How can an increase in biodiversity lead to an increase in ecosystem stability?
Yellowstone National Park has 124 wolves living in it. The park covers 3472 square miles. What is the population density of wolves living in Yellowstone?
Variations within a species are an important part of Charles Darwin's theory of evolution. Which example can be explained by individual variation?
Consider the group of giraffes in the image below.Which statement about the giraffes explains their evolution based on Charles Darwin’s main points?
Among humans more boys are born than girls, but women have significantly higher life expectancies. What is the significance of this?
More boys are born than girls, but males generally have higher mortality and women tend to live longer. The higher number of male births partly compensates for this difference, so the sex ratio becomes more balanced as people age and women make up a larger share of older populations.
Describe the sampling method for determining population size.
The sampling method involves counting the total number of organisms in a certain area and then using that number to determine the total number of organisms in a larger area.
When might an increase in biodiversity lead to a decrease in the stability of an ecosystem?
Invasion by non-native species that increase species count but reduce overall stability.
How can an increase in biodiversity lead to an increase in ecosystem stability?
Variation of ecological habitats within a species is characteristic of which type of diversity?
Which of the following species would you most expect to be distributed according to a regular pattern?
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