Biology Essentials- Logistic Growth (S-shaped curve)
Guided Viewing Worksheet
1: What is N?
N is population size
2: What is r? What is the equation for r?
r is growth rate
r = (births-deaths)/N
3: What did Darwin realize about elephants and their reproductive rate?Darwin realized that elephants can reproduce slowly. However if all elephants reproduce at that rate, there would be 15 million elephants
4: What is K?
K is carrying capacity is the maximum population an ecosystem can support
5: What is the equation for exponential growth (j shaped curve)?
r = dN/dT
6: For logistic growth, what changes from exponential growth?
(K-N)/K is added to the exponential growth equation
7: What happens if r is bigger than 0?
Exponential growth will occur
8: What is an r selected species? Give an example.
R species are species that love to grow as quickly as they can. Ex/
9: What is a K selected species? Give an example.
K selected species are growth rate of these species is slow, and the offspring are cared for. Ex/
10: What kind of selected species are humans
We are a K selected species, because we are caring towards our children
1: What is N?
N is population size
2: What is r? What is the equation for r?
r is growth rate
r = (births-deaths)/N
3: What did Darwin realize about elephants and their reproductive rate?Darwin realized that elephants can reproduce slowly. However if all elephants reproduce at that rate, there would be 15 million elephants
4: What is K?
K is carrying capacity is the maximum population an ecosystem can support
5: What is the equation for exponential growth (j shaped curve)?
r = dN/dT
6: For logistic growth, what changes from exponential growth?
(K-N)/K is added to the exponential growth equation
7: What happens if r is bigger than 0?
Exponential growth will occur
8: What is an r selected species? Give an example.
R species are species that love to grow as quickly as they can. Ex/
9: What is a K selected species? Give an example.
K selected species are growth rate of these species is slow, and the offspring are cared for. Ex/
10: What kind of selected species are humans
We are a K selected species, because we are caring towards our children