Population Growth

Question 1

What does the variable N stand for?

Answer 1

Population size

Question 2

What happens when there are equal part births and immigration?

Answer 2

The population stays the same

Question 3

What does the variable K stand for?

Answer 3

Carrying capacity

Question 4

T/F?
Carrying capacity is located in logistic growth and exponential growth models

Answer 4

True

Question 5

Where is carrying capacity found?

Answer 5

Where the lines meet/when it is zero

Question 6

Where is population growth the highest in exponential growth?

Answer 6

When the population is growing its quickest

Question 7

What does the variable r stand for?

Answer 7

Maximum per Capita growth rate

Question 8

Where is population growth the highest in logistic growth?

Answer 8

The peak of the line

Question 9

What is density-dependent?

Answer 9

A major impact on growth that occurs when a population is more dense

Question 10

What are some factors for density-dependent?

Answer 10

1. Dieseses/Parasites
2. Predators

Question 11

What does the variable N0 stand for?

Answer 11

Euler’s number, mathematical constant

Question 12

What is density-independent?

Answer 12

A major impact on growth that has nothing to do with population density, tend to be abiotic

Question 13

What are some factors of density-independent?

Answer 13

1. Seasonal Cycles
2. Pollutants in environment
3. Food limitation

Question 14

What does the variable dN/dt stand for?

Answer 14

Population growth rate

Question 15

How does an exponential growth model change when r changes?
Why?

Answer 15

It changes by the rate in which the population grows because it is the variable that shows the maximum growth rate

Question 16

What would happen if death rates and immigration both grow?

Answer 16

There would be a large decrease in population growth

Question 17

How would a logistic model change when K is changed? Why?

Answer 17

This causes the model to have a longer or shorter duration to grow because it gives the limit to how many individuals can grow before they start to decrease

Question 18

How would an exponential model change if N was changed? Why?

Answer 18

When changed, the number that the population starts at can either be greater or less because it is the original population size

Question 19

How would a logistic model change if r was changed? Why?

Answer 19

When changed the time period when it gets to a flat line either gets quicker or shorter because the amount of individuals grows faster, causing the max capacity to be reached quicker

Question 20

How would a logistic model change if N was changed? Why?

Answer 20

When changed, this also causes the time reaching a stop either goes up or down but at a slower rate. This is because it also causes there to either be more or less people already occupying the area with the carrying capacity limit