Biology Chapter 5 Study Questions

A scientist conclude that a population of Bison has reached the carrying capacity of the Prairie where it lives. The birth rate and death rate of the Bison population are equal to each other. What can be concluded about the rates of immigration and emigration? a. The rates of immigration and emigration are equal to each other b. The rate of either immigration or emigration is zero c. The rate of immigration equals the birth rate d. The Rate of emigration equals the death rate

a. The rates of immigration and emigration are equal to each other

This stage applies to most of human history, although not necessarily the present a. stage one b. stage two c. stage three

a. stage one

This stage helps explain why the human population grew very slowly until about 1900 a. stage one b. stage two c. stage three

a. stage one

Scientist have observed exponential growth of lionfish in the Caribbean Sea. Which of these predictions about the future of the lionfish population is the most likely to occur? a. The lionfish population will continue growing exponentially indefinitely b. A limiting factor will cause the growth of the lionfish population to slow down, forming a pattern of logistic growth c. A limiting factor will cause the lionfish population to decline rapidly, and eventually decrease to near-zero d. The lionfish population will enter a cycle of increasing and decreasing numbers, typically of many predators and prey

b. A limiting factor will cause the growth of the lionfish population to slow down, forming a pattern of logistic growth

A rabbit population is affected by parasitism and disease, both of which are density dependent limiting factors. Which statement describes the effects of parasitism and disease on the rabbits? a. Parasites and disease weaken or kill a constant percentage of the rabbit population, regardless of its density b. As the density of the rabbit population increases, parasites and disease weaken or kill a greater percentage of rabbits c. As the density of the rabbit population increases, parasites and disease weaken or kill a lesser percentage of rabbits d. Parasites and disease weaken or kill mostly the youngest and oldest rabbits, and not the rabbits of average age

b. As the density of the rabbit population increases, parasites and disease weaken or kill a greater percentage of rabbits

Growth rate slows down, due to the effect of limiting factors a. Phase I b. Phase II c. Phase III

b. Phase II

The human population has changed in ways that are similar to other populations. How has the human population changed since it first appeared on Earth? a. The population has generally increase at a relatively constant rate b. the population is generally increase, and at rates that have varied over time c. The population increase rapidly until it reaches carrying capacity, where it has remained for thousands of years d. The population increase rapidly until it reaches carrying capacity, and then decreased at a constant rate

b. the population is generally increase, and at rates that have varied over time

Changes to population size are relatively small, temporary, and difficult to predict a. Phase I b. Phase II c. Phase III

c. Phase III

In the 18th century, the population of sea otters decrease significantly along the California coast. Scientist site The Haunting of sea otters by human as the cause of this decreased. Today, the population of invasive lionfish is growing rapidly in the Caribbean Sea. However, scientists argue that human hunting or harvesting of lionfish will not affect the population. Which comparison of sea otters and wine fish is most useful for explaining the potential impact of human hunting on their populations? a. lionfish have a much shorter average lifespan b. lionfish have a much higher death rate c. lionfish have a much higher birth rate d. lionfish have a much narrower Geographic range

c. lionfish have a much higher birth rate

In a forest ecosystem, a variety of predators compete with one another for the same pray. The Predators include wolves, coyotes, foxes, and Hawks. They're playing clue deer, rabbits, mice, and the chickens that live outdoors are nearby farms in backyards. Suppose that human activities, such as hunting, drastically reduce the populations of the Wolves, coyotes, and foxes. Which statement best explains the likely change the hawk population? a. The hawk population decreases because of the natural cycle that affects predators and prey b. The hawk population remains constant because competition has no effect on carrying capacity c. The hawk population increases in a pattern of exponential growth, because of limiting factors on the population were removed d. The hawk population increases to a new carrying capacity that is determined by one or more limiting factors, such as the availability of food.

d. The hawk population increases to a new carrying capacity that is determined by one or more limiting factors, such as the availability of food.

Which best describes the growth pattern of the rainbow trout a. Exponential growth, because the lake provides unlimited resources to the population b. adjusted gross, because the effect of limiting factors increases with the population size c. exponential growth, because limiting factors are always affecting the population d. logistic growth, because the lake provides unlimited resources until the population reaches carrying capacity

d. logistic growth, because the lake provides unlimited resources until the population reaches carrying capacity

The population reaches carrying capacity a. Phase I b. Phase II c. Phase III

c. Phase III

Rapid Growth (Niger)

A- Bottom way bigger than top in graph

Slow growth (United States)

B- bottom still bigger than top but barely

Negative growth (Japan)

C- top bigger than bottom in the graph

Which of the following pairs of populations is most likely to increase and decrease in a similar pattern to the wolves and moose? a. Moose in Boston firm, which are the favorite food plants of moose b. Very old wolves in young wolf pups c. Moose and the beneficial bacteria that live in the digestive tracts of moose d. Male wolves and female wolves

a. Moose in Boston firm, which are the favorite food plants of moose

Exponential growth is occurring a. Phase I b. Phase II c. Phase III

a. Phase I

Many limiting factors, such as competition for food and nesting grounds, have little or no effect on population growth a. Phase I b. Phase II c. Phase III

a. Phase I

An expert in demographic is asked to predict changes to the population size of a small country. Which data about the country would be the most useful for the expert to analyze. select 3 answers a. Population size b. Percentages of males and females c. Birth rate and death rate d. Age structure e. Population distribution between urban and rural areas

a. Population size c. Birth rate and death rate d. Age structure

A hurricane blows across a Caribbean Island. The Storm flatten trees, and it drowns are washers away large number of plants and animals. As a result of the storm, the carrying capacity of the island is temporarily reduced from many of the island species. How is the storm classified as a limiting factor? a. The storm is a density-independent limiting factor, because population size and density do not alter the storm's effect. b. The storm is a density-independent limiting factor, because its effects depend on the size and density of a population. c. The storm is a density-dependent limiting factor, because it's a fact depends on the size and density of a population d. The storm is a density-dependent limiting factor, because its effect depends on the strength of its wind and rainfall

a. The storm is a density-independent limiting factor, because population size and density do not alter the storm's effect.

This stage represents the United States today a. stage one b. stage two c. stage three

a. stage one

Bamboo is a type of grass. In the wild, pandas eat bamboo almost exclusively. For this reason, the availability of bamboo is he significant limiting factor on the panda population. Which statement describes how pandas could become extinct in the wild? a. The bamboo population decreases so low that other limiting factors begin to affect the panda population b. The bamboo population decreases so low that the carrying capacity for pandas become zero c. The populations of bamboo in pandas follow a cycle pattern of increasing and decreasing, until one of them becomes extinct d. The populations of bamboo and pandas both follow a pattern of exponential growth, and then both become extinct

b. The bamboo population decreases so low that the carrying capacity for pandas become zero

Which of these events is most likely to occur during stage 2 of the demographic transition a. The population decreases slightly, especially in the younger age ranges b. The population decreases slightly, especially in the older age ranges c. The population increases slightly, due mainly to the increased rate that babies are born d. The population increases significantly, due mainly to a decrease in death rate

b. The population decreases slightly, especially in the older age ranges

Improved Health, sanitation, and nutrition help explain this stage a. stage one b. stage two c. stage three

b. stage two

Which conclusion about country one does its age structure support a. Young children have a lower death rate in country 1 then in other countries b. Young children have a higher death rate in country one then in other countries c. More young children live in country one than in other countries d. Fewer young children live in country one then in the other countries

c. More young children live in country one than in other countries

The population stope growing during this stage a. stage one b. stage two c. stage three

c. stage three