Chapter 2 Lesson 2

Question 1

When is growth positive?

Answer 1

When the births + immigration > deaths + emigration

Question 2

When is there no growth?

Answer 2

When the births + immigration = deaths + emigration

Question 3

When is growth negative?

Answer 3

When the births + immigration < deaths + emigration

Question 4

What does t stand for?

Answer 4

Maximum per capita (individual) rate of growth

Question 5

How do you calculate r?

Answer 5

Growth/Individuals | (births - deaths) / Original size of population

Question 6

If a moose population has 15 moose to start with, and after 5 years, 52 are born and 7 die. What is the growth / capita (r)?

Answer 6

3 growth / capita

Question 7

When does an environment have exponential growth?

Answer 7

When there is an ideal environment without limiting factors

Question 8

What are some examples of exponential growth in environments?

Answer 8

• Invasive Species
• Protected Species

Question 9

What is the exponential growth equation?

Answer 9

dN / dt = rN

Question 10

What does N stand for?

Answer 10

Population Size

Question 11

What does dN / dt stand for?

Answer 11

Growth Rate (Change in population size / change in time)

Question 12

What does t stand for?

Answer 12

Time

Question 13

What does No stand for?

Answer 13

Initial population size

Question 14

What does K stand for?

Answer 14

Carrying capacity, the maximum population size that environment can support without degrading the habitat

Question 15

What is the equation for logistic growth?

Answer 15

dN / dt = rN((K - N) / K)

Question 16

How do you find the carrying capacity (K)?

Answer 16

Highest growth / 2

Question 17

What are the two types of limiting factors?

Answer 17

Density Dependent & Density Independent

Question 18

What are Density Dependent limiting factors?

Answer 18

Factors that only have a major impact on population growth when the population is more and more dense

Question 19

What are Density Independent limiting factors?

Answer 19

Factors that have a major impact of population growth all of the time

Question 20

What are some examples of Density Dependent factors?

Answer 20

• Biotic Factors
  
  • Competition
  • Deseise

Question 21

What are some examples of Density Independent factors?

Answer 21

• Abiotic Factors
  
  • Droughts
  • Floods

Question 22

What is carrying capacity?

Answer 22

The amount of organisms in a population that a specific area can support