Biology Chapter 5

Question 1

What is a population

Answer 1

A group of species in the same place at the same time

Question 2

What is population defined by?

Answer 2

geographic distribution
population density
population size

Question 3

What are the different geographic distributions

Answer 3

random, clustered, uniform

Question 4

Define population density

Answer 4

individuals per unit of area

Question 5

Population size

Answer 5

Total amount of individuals in the population

Question 6

population model

Answer 6

A theoretical example of a population showing many of the main important factors

Question 7

Population Growth

Answer 7

How quickly the population is growing
-Its determined by deaths, births, immigration, and emigration

Question 8

Immigration versus emigration

Answer 8

Immigration is moving in, emigration is moving out

Question 9

What are the different types of population growth

Answer 9

Logistic and exponential

Question 10

Why does logistic growth flatten out?

Answer 10

When the population reaches is carrying capacity

Question 11

carrying capacity

Answer 11

Total amount of organisms and ecosystem can support

Question 12

How is population growth limited

Answer 12

INCREASE: Deaths, Emigration
DECREASE: Births, Imigration

Question 13

Limiting factors

Answer 13

Factors that cause a population to be unable to grow, or kill off the individuals in the population

Question 14

Density dependent factors

Answer 14

Limiting factors dependent on a population size
-predation, competition, parasitism, disease

Question 15

Density Independent factors

Answer 15

Limiting factors that affect population no matter what
-natural disasters, weather, seasonal changes, human activity

Question 16

Predator Prey relationship

Answer 16

Predator keeps prey under wraps-

if the prey population goes up so does the predators causing the prey to go back down.

Question 17

r Strategist

Answer 17

Rapidly growing population with a high biotic potential. Constantly experience exponential growth, type 3 survivor ship curve, are generally affected by DIF

Question 18

K Strategist

Answer 18

Steadily growing or stable population with a low biotic potential. Often at carrying capacity after experiencing logistic growth, type 1 survivor ship curve, affected by DDF

Question 19

What size population is most affected by Density Independent Factors?

Answer 19

A Small population size because of the limited biodiversity

Question 20

How does human population growth

Answer 20

In the past 500 years human population began growing incredibly quickly

Question 21

How do developed countries compare to developing countries in terms of population growth

Answer 21

developed countries have slowed in population growth, developing countries are still growing

Question 22

What caused a spike in population

Answer 22

Increased sanitation, medical, agriculture

Question 23

Demographic transition

Answer 23

Starts: drop in deaths
Ends: drop in births

Question 24

What causes the human demographic transition to end?

Answer 24

Women education

Question 25

Age Structure diagram

Answer 25

A model showing the amount of people at each age

Question 26

What age defines the future in an age structure diagram

Answer 26

pre-reproductive age females
-the more there are in comparison to other age the faster the population is increasing

Question 27

Survivor ship curves

Answer 27

A model showing the amount of people at each age in a graph
-type 1, 2 and 3