Unit Test — Unit test Answers

Which of the following statements about logistic growth curves is true?

Which of the following species would you most expect to be distributed according to a regular pattern?

For which method of determining population size is the population not aware of the sampler’s presence?

Which of the following selection pressures is responsible for the limited evolutionary changes experienced by alligators and other crocodilians?

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?

Population density is calculated by _______.

Natural selection is best described as _______.

Which of the following is not true about the distribution of species?

New Zealand has a population of 4,326,380 and has an area of 103,736 mi while Australia has an area of 2,967,909 mi and a population of 21,905,140. Calculate the population density for New Zealand and Australia. Round the population densities to the nearest whole number.

Explain how the method of mark and recapture works to determine population size.

Among humans more boys are born than girls, but women have significantly higher life expectancies. What is the significance of this?

Explain how and why natural selection has allowed species such as sharks and alligators to remain genetically stable for thousands of years.

Explain why random distribution patterns for species are the rarest in nature.

Regular distribution is observed for many organisms due to _______.

Adaptive melanism describes selection for _______.