Question 1

For a variety of organisms r increases with

Accepted Answer

A)  Increasing generation time and increasing body weight 
B)  Increasing generation time and decreasing body weight 
C)  Decreasing generation time and increasing body weight 
D)  Decreasing generation time and decreasing body weight 
A)  Increasing generation time and increasing body weight 
B)  Increasing generation time and decreasing body weight 
C)  Decreasing generation time and increasing body weight 
D)  Decreasing generation time and decreasing body weight D

Question 2

A population whose growth is well modeled by the logistic growth equation is experiencing

Accepted Answer

A)  Density dependent growth 
B)  Density independent growth 
C)  Inverse density dependent growth 
D)  Inverse density independent growth 
A)  Density dependent growth 
B)  Density independent growth 
C)  Inverse density dependent growth 
D)  Inverse density independent growth A

Question 3

If a population of rabbits grows by 50% over 10 years, what is the average finite rate of increase per year?

Accepted Answer

A)  1.5 
B)  50 
C)  1.04 
D)  57.67 
E)  38.44 
A)  1.5 
B)  50 
C)  1.04 
D)  57.67 
E)  38.44 C

Question 4

Logistic growth yields a J shaped curve

Accepted Answer

A) True 
 B)False

Question 5

Children under 15 make up half the population in West Africa.

Accepted Answer

A) True 
 B)False

Question 6

Exponential growth occurs when species breed continuously and overlapping generations are found.

Accepted Answer

A) True 
 B)False

Question 7

Desert animals may be seen as stress tolerators.

Accepted Answer

A) True 
 B)False

Question 8

If a population of duckweed, if b=0.4 per week and d=0.2 per week and N=50, how many plants will there be after one week?

Accepted Answer

A)  10 
B)  30 
C)  50 
D)  60 
E)  100 
A)  10 
B)  30 
C)  50 
D)  60 
E)  100

Question 9

You have a weed growing exponentially on your pond. It doubles in numbers every day. Unchecked it will cover the pond in 40 days. You decide to weed the pond when it's half covered. On what day is that?

Accepted Answer

A)  10 
B)  20 
C)  30 
D)  35 
E)  39 
A)  10 
B)  20 
C)  30 
D)  35 
E)  39

Question 10

If R03=2.0 and N0=200, then population size after 3 generations is

Accepted Answer

A)  800 
B)  1600 
C)  202 
D)  400 
E)  1200 
A)  800 
B)  1600 
C)  202 
D)  400 
E)  1200

Question 11

If N0=10, t=4 and r=0.1, then Nt+4=

Accepted Answer

A)  4 
B)  10 
C)  14.9 
D)  40 
E)  11.05 
A)  4 
B)  10 
C)  14.9 
D)  40 
E)  11.05

Question 12

Population growth under conditions of limited resources is termed

Accepted Answer

A)  Exponential 
B)  Geometric 
C)  Logistic 
D)  Lagged 
E)  Stochastic 
A)  Exponential 
B)  Geometric 
C)  Logistic 
D)  Lagged 
E)  Stochastic

Question 13

In population growth, R0 reflects a generational growth rate while r denotes an instantaneous rate.

Accepted Answer

A) True 
 B)False

Question 14

The demographic transition occurred earlier in Mexico than in Sweden.

Accepted Answer

A) True 
 B)False

Question 15

Exponential growth tends to result in "S" shaped growth curves.

Accepted Answer

A) True 
 B)False

Question 16

If the finite rate of increase, $\lambda$, is less than 1, then the population

Accepted Answer

A)  Increases 
B)  Decreases 
C)  Stays the same 
D)  Decreases to a low level then remains constant 
E)  Increases to the carrying capacity 
A)  Increases 
B)  Decreases 
C)  Stays the same 
D)  Decreases to a low level then remains constant 
E)  Increases to the carrying capacity

Question 17

In which condition will a population increase?

Accepted Answer

A)  R0 = 0 
B)  R0 = 0.5 
C)  r = 0.5 
D)  r = -0.5 
E)  $\lambda$ = 0.9 
A)  R0 = 0 
B)  R0 = 0.5 
C)  r = 0.5 
D)  r = -0.5 
E)  $\lambda$ = 0.9

Question 18

A source of mortality that decreases with increasing population size is

Accepted Answer

A)  Density dependent 
B)  Density independent 
C)  Inversely density dependent 
D)  Inversely density independent 
E)  Inversely density negative independent 
A)  Density dependent 
B)  Density independent 
C)  Inversely density dependent 
D)  Inversely density independent 
E)  Inversely density negative independent

Question 19

If a population of rabbits increases from 1000 to 1500 over 10 years, what is the cumulative rate of increase as a percentage?

Accepted Answer

A)  1.5 
B)  0.5 
C)  50 
D)  100 
E)  150 
A)  1.5 
B)  0.5 
C)  50 
D)  100 
E)  150

Question 20

When populations breed seasonally, with young produced once a year, we say growth is

Accepted Answer

A)  Exponential 
B)  Geometric 
C)  Compounded 
D)  Annual 
E)  Episodic 
A)  Exponential 
B)  Geometric 
C)  Compounded 
D)  Annual 
E)  Episodic

Exam 10: Population Growth

For a variety of organisms r increases with

A population whose growth is well modeled by the logistic growth equation is experiencing

If a population of rabbits grows by 50% over 10 years, what is the average finite rate of increase per year?

Logistic growth yields a J shaped curve

Children under 15 make up half the population in West Africa.

Exponential growth occurs when species breed continuously and overlapping generations are found.

Desert animals may be seen as stress tolerators.

If a population of duckweed, if b=0.4 per week and d=0.2 per week and N=50, how many plants will there be after one week?

You have a weed growing exponentially on your pond. It doubles in numbers every day. Unchecked it will cover the pond in 40 days. You decide to weed the pond when it's half covered. On what day is that?

If R03=2.0 and N0=200, then population size after 3 generations is

If N0=10, t=4 and r=0.1, then Nt+4=

Population growth under conditions of limited resources is termed

In population growth, R0 reflects a generational growth rate while r denotes an instantaneous rate.

The demographic transition occurred earlier in Mexico than in Sweden.

Exponential growth tends to result in "S" shaped growth curves.

If the finite rate of increase, λ\lambdaλ , is less than 1, then the population

In which condition will a population increase?

A source of mortality that decreases with increasing population size is

If a population of rabbits increases from 1000 to 1500 over 10 years, what is the cumulative rate of increase as a percentage?

When populations breed seasonally, with young produced once a year, we say growth is

An Introduction to Ecology

Population Genetics

Natural Selection, Speciation, and Extinction

Behavioral Ecology

Temperature

Water

Nutrients

Demographic Techniques and Population Patterns

Life Tables and Demography

Competition and Coexistence

Facilitation

Predation

Herbivory

Parasitism

Population Regulation

Species Diversity

Species Richness Patterns

Species Richness and Community Services

Succession

Island Biogeography

Terrestrial Biomes

Marine Biomes

Freshwater Biomes

Food Webs and Energy Flow

Biomass Production

Biogeochemical Cycles

Filters

If R₀³=2.0 and N₀=200, then population size after 3 generations is

If N₀=10, t=4 and r=0.1, then N_t+4=

In population growth, R₀ reflects a generational growth rate while r denotes an instantaneous rate.

If the finite rate of increase, $\lambda$ , is less than 1, then the population