test one

Question 1

relationship in which two different organisms live together often interdependently

Answer 1

symbiosis

Question 2

symbiotic relationship in which one member benefits at the expense of the other

Answer 2

parasitism

Question 3

a population is group of interacting populations of different species living together in the same are

Answer 3

false

Question 4

trophic levels are feeding levels based on position in a food chain

Answer 4

true

Question 5

organism at base of food chain are consumers and are higher up the food chain than producers

Answer 5

false

Question 6

niche overlap results in competition

Answer 6

true

Question 7

ecosystems are made up of the living and nonliving components of an environment

Answer 7

false

Question 8

moderate winters and rainfall

Answer 8

temperate forest

Question 9

warm temperatures and sufficient rainfall

Answer 9

tropical forests

Question 10

extreme dryness

Answer 10

desert

Question 11

low growing vegetation; permafrost

Answer 11

tundra

Question 12

perennial grasses and nonwoody plants

Answer 12

grasslands

Question 13

the carbon cycle is the movement of carbon atoms via natural processes such as

Answer 13

D. decomposition; photosynthesis; respiration

Question 14

what makes an organism a keystone species

Answer 14

c. its loss would negatively impact the ecosystem and the community

Question 15

which is NOT necessarily true of a keystone species?

Answer 15

d. they are the most abundant species in the community

Question 16

which is NOT true of consumers

Answer 16

c. they are photosynthetic

Question 17

producers are photosynthetic

Answer 17

true

Question 18

a graph of the growth of the human population has what shape

Answer 18

a. j shape

Question 19

the human population is growing exponentially largely due to

Answer 19

all of the above

Question 20

the growth rate of a population is calculated from the ______for that population

Answer 20

B. difference between birth and death

Question 21

which of the following conditions would lead to the fastest population growth

Answer 21

c. birth rate> death rate; immigration> emigration

Question 22

removal of a predator from an ecosystem may do all of the following EXCEPT

Answer 22

allow prey populations to remain above carrying capacity

Question 23

symbiosis describes

Answer 23

species living in close association with each other

Question 24

the study of the interaction among organisms and between organisms and their nonliving environment

Answer 24

ecology

Question 25

how an individual organism fares in its surroundings

Answer 25

individual level

Question 26

interacting populations of different species

Answer 26

community

Question 27

species interacting with other species and the environment

Answer 27

ecosystem

Question 28

organisms distributed in geographic space; depends on resources and interactions with other members of the population; reflect behavioral or ecological adaption

Answer 28

distribution pattern

Question 29

this type of distribution may allow individuals to maximize their access to resources

Answer 29

random distribution

Question 30

this type of distribution occurs when resources are unevenly distributed across the landscape ; or when social behavior dictates grouping

Answer 30

clumped distribution

Question 31

this type of distribution results from territorial behavior

Answer 31

uniform distribution

Question 32

difference between the birth rate and the death rate is the

Answer 32

growth rate

Question 33

movement of individuals INTO a population

Answer 33

immigration

Question 34

movement of individuals OUT of a population

Answer 34

emigration

Question 35

unrestricted growth of a population increasing at a constant growth rate is

Answer 35

exponential growth

Question 36

starts off fast and then levels off; environmental factors will limit an organism's ability to reproduce; for example access to habitat

Answer 36

logistic growth

Question 37

the physical environment where an organism lives and to which it is adapted

Answer 37

habitat

Question 38

the maximum number of individuals that an environment can support given its space and resources; upper limit on the size of any population

Answer 38

carrying capacity

Question 39

the size of the population may fluctuate around the environments _____

Answer 39

carrying capacity

Question 40

a number of factors influence the likelihood that wolves will kill moose

Answer 40

isle royale

Question 41

number of organisms per given area

Answer 41

population density

Question 42

a factor whose influence on population size and growth depends on the number and crowding of individual in the population; such as a predation

Answer 42

density- dependent factors

Question 43

a factor that influences population size and growth regardless of the numbers and crowding within a population such as weather

Answer 43

density independent factors

Question 44

living components of an environment

Answer 44

biotic factors

Question 45

nonliving components of environment

Answer 45

abiotic factors

Question 46

what are factors that affect population size?

Answer 46

disease | climate change

Question 47

a groups of interacting populations of different species living together in the same area

Answer 47

community

Question 48

predator prey interactions can involve

Answer 48

physical defense toxicity warning coloration mimicry

Question 49

the space environmental conditions, and resources that a species needs in order to survive and reproduce

Answer 49

ecological niche

Question 50

one of the competing species will be driving to extinction

Answer 50

competitive exclusion principle

Question 51

symbiotic relationship in which both members benefit

Answer 51

mutualism

Question 52

symbiotic relationship in which one member benefits and other is unharmed

Answer 52

commensalism

Question 53

the variety of life in the world or in a particular habitat or ecosystem

Answer 53

biodiversity

Question 54

the number of species living in a habitat or other unit

Answer 54

species richness

Question 55

species which serves as the base or bedrock of a community; often primary producers and abundant

Answer 55

foundation species

Question 56

species on which other species depend hold the community together

Answer 56

keystone species

Question 57

sequential appearance or disappearance of species over time is called

Answer 57

succession