WorksheetsBiology: Chapter 4 Review
Total questions: 27
Worksheet time: 14mins
Which of the following is the correct equation for calculating growth rate?
r=b-d
r=b+d
r= b x d
How do density-dependent factors affect a population?
They slow exponential growth until the population levels out at carrying capacity
They cause a sudden decline in the population
They cause exponential growth of the population
They cause the carrying capacity to increase as the population grows
What kinds of changes can lead to an increase in carrying capacity?
More resources become available in the area.
More organisms immigrate into the area.
More waste by-products accumulate in the area.
Carrying capacity is fixed and cannot be changed.
Which are two ways a population can decrease in size?
immigration and emigration
increased death rate and immigration
decreased birthrate and emigration
emigration and increased birthrate
During some kinds of population growth, the size of each generation of offspring is larger than the generation before it. So, as the population gets larger, it grows more quickly. This situation is called
logistic growth
exponential growth
multiple growth
When the exponential phase of a logistic growth curve of a population stops,
the size of the population drops.
the size of the population stays the same.
population growth begins to slow down.
population growth begins to speed up.
Each of the following is a density-dependent limiting factor EXCEPT
competition.
temperature.
crowding.
disease.
Which would be least likely to be affected by a density-dependent limiting factor?
a small, scattered population
a population with a high birthrate
a large, dense population
a population with a high immigration rate
A disease resulting in the deaths of one third of a dense population of bats in a cave would be a
density-dependent limiting factor.
result of exponential growth.
density-independent limiting factor.
nutrient-limiting factor.
When you graph a population’s exponential growth over time, you will have an S-shaped graph.
True
False
Density-dependent limiting factors affect all populations, whether the population size is two or two hundred.
true
false
Label this scenario as a factor that will increase of decrease the carrying capacity for a species. The most populous predator of the species emigrates.
increases carrying capacity
decrease carrying capacity
Label this scenario as a factor that will increase of decrease the carrying capacity for a species. Favorable environmental conditions boost the birth rates.
increases carrying capacity
decrease carrying capacity
Label this scenario as a factor that will increase of decrease the carrying capacity for a species. All the organisms infected with a contagious disease die off.
increases carrying capacity
decrease carrying capacity
Label this scenario as a factor that will increase of decrease the carrying capacity for a species. A new parasite for the species immigrates into the community increases carrying capacity
increases carrying capacity
decrease carrying capacity
Categorize the following as density-dependent or density-independent factors. lava flow covering a forest.
density-independent
density-dependent
Categorize the following as density-dependent or density-independent factors. lack of food resources due to drought
density-independent
density-dependent
Categorize the following as density-dependent or density-independent factors. pine bark beetles eating pine trees
density-independent
density-dependent
Categorize the following as density-dependent or density-independent factors. flooding after a heavy rain
density-independent
density-dependent
What is survivorship type? Survivorship rate remains about the same throughout its lifespan. (birds)
Type I survivorship
Type II survivorship
Type III survivorship
What is survivorship type? Death rate relatively low and long living (humans)
Type I survivorship
Type II survivorship
Type III survivorship
What is survivorship type? High birth rates and high death rates soon after birth (fish)
Type I survivorship
Type II survivorship
Type III survivorship
Which of the countries will have the fastest population growth?
Kazakhstan: Birth Rate: 21.7 Death Rate: 7.2
Czech Republic Birth Rate: 10.5 Death Rate: 10.5
Ukraine Birth Rate: 8.1 Death Rate: 14.7
What happens if a population grows past its carrying capacity?
The population keeps growing
The population reduces untl it is below carrying capacity again
The entire species will go extinct
The carrying capacity just increases
Carrying capacity is...
The maximum number of individuals that can fit into an area
Ability of an area to accommodate a growing population
The greatest # of individuals an area can support over time.
The maximum number of species that can co-exist in an area
Which of the following statements is true?
A decrease in food availability lowers carrying capacity.
An increase in water will decrease the carrying capacity.
A fishes population cannot exceed the carrying capacity.
A population stays level once at carrying capacity.
