Biology Essentials- Logistic Growth (S-shaped curve)
1: What is N?
-population size
2: What is r? What is the equation for r?
-Growth rate
-r=Birth-Death/N
3: What did Darwin realize about elephants and their reproductive rate?
-they take a long time to reproduce they have to be thirty to reproduce
-if you let them keep breeding for the next 5 generations you're going to have 5 million
4: What is K?
-Carrying capacity
5: What is the equation for exponential growth (j shaped curve)?
-dN/dt= rN
6: For logistic growth, what changes from exponential growth?
-The factor when it uses carrying capacity
7: What happens if r is bigger than 0?
-were gonna show fast exponential growth
8: What is an r selected species? Give an example.
-it is a specie that loves to grow as quickly as it can
-(frog)
9: What is a K selected species? Give an example.
-The growth rate is really slow a lot of parental care and they are all going to survive
chameleon
10: What kind of selected species are humans?
-we invest a lot in our young we will reach a carrying capacity and keep it then
-population size
2: What is r? What is the equation for r?
-Growth rate
-r=Birth-Death/N
3: What did Darwin realize about elephants and their reproductive rate?
-they take a long time to reproduce they have to be thirty to reproduce
-if you let them keep breeding for the next 5 generations you're going to have 5 million
4: What is K?
-Carrying capacity
5: What is the equation for exponential growth (j shaped curve)?
-dN/dt= rN
6: For logistic growth, what changes from exponential growth?
-The factor when it uses carrying capacity
7: What happens if r is bigger than 0?
-were gonna show fast exponential growth
8: What is an r selected species? Give an example.
-it is a specie that loves to grow as quickly as it can
-(frog)
9: What is a K selected species? Give an example.
-The growth rate is really slow a lot of parental care and they are all going to survive
chameleon
10: What kind of selected species are humans?
-we invest a lot in our young we will reach a carrying capacity and keep it then