Chapter 4 Test

Question 1

population density

Answer 1

number of organisms per unit area (how crowded something is)

Question 2

Distribution

Answer 2

how things are dispersed

Question 3

Dispersion

Answer 3

arrangement of population in their environment

Question 4

what are the three kinds of dispersion?

Answer 4

uniform, clumped, random

Question 5

Uniform

Answer 5

the same, consistently found

Question 6

Examples of uniform dispersion

Answer 6

Bears, bobcats, tigers, territorial animals

Question 7

Examples of clumped dispersion

Answer 7

school of fish, ants, herds of bison, flocks of geese

Question 8

Examples of random dispersion

Answer 8

Spiders, squirrels, rabbits, deer

Question 9

Examples of uniform and clumped dispersion

Answer 9

pride of lions, pack of hyenas

Question 10

population ranges

Answer 10

where it lives–is the range of tolerance

Question 11

population limiting factors

Answer 11

factors that limit where an organism can live

Question 12

how many types of limiting factors are there?

Answer 12

2 types

Question 13

what are the two types of limiting factors?

Answer 13

density-independent factors and density-dependent factors

Question 14

Density-independent factors

Answer 14

do not depend on population (abiotic factors)

Question 15

Density-dependent factors

Answer 15

Density-dependent factors- do depend on population (biotic factors)

Question 16

examples of density-independent factors

Answer 16

any kind of weather…precipitation, wind, temp, humidity

Question 17

examples of density-dependent factors

Answer 17

disease, competition, parasites, etc.

Question 18

Population Growth Rate (PGR)

Answer 18

How fast a population grows/reduces

Question 19

What are the four factors in PGR?

Answer 19

Natality, mortality, immigration, emigration

Question 20

Natality

Answer 20

birth rate in a time period

Question 21

mortality

Answer 21

death rate

Question 22

immigration

Answer 22

into a population

Question 23

emigration

Answer 23

exiting a population

Question 24

Lag Phase

Answer 24

no to very little growth over a long period of time

Question 25

Exponential growth

Answer 25

growth rate is proportional to to the size of the population

Question 26

when exponential growth is happening, what does the species NOT have to worry about?

Answer 26

limiting factors

Question 27

Logistic Growth Model

Answer 27

the growth rate slows when reaching carrying capacity

Question 28

Carrying capacity

Answer 28

size of the population and limiting factors/resources determine carrying capacity

Question 29

reproductive patterns

Answer 29

Different species have different reproductive patterns

Question 30

R-strategists

Answer 30

Generally smaller organisms Short life span Produces many offspring Low survival rate

Question 31

K-strategists

Answer 31

Generally larger organisms Long life span Produces few offspring High survival rate

Question 32

examples of R-strategists

Answer 32

flies, some insects, sea turtles, some fish, most plants

Question 33

examples of K-strategists

Answer 33

whales, elephants, mice, most birds, etc.