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Biology 102 > test one > Flashcards

test one Flashcards

1
Q

relationship in which two different organisms live together often interdependently

A

symbiosis

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2
Q

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

A

parasitism

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3
Q

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

A

false

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4
Q

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

A

true

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5
Q

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

A

false

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6
Q

niche overlap results in competition

A

true

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7
Q

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

A

false

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8
Q

moderate winters and rainfall

A

temperate forest

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9
Q

warm temperatures and sufficient rainfall

A

tropical forests

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10
Q

extreme dryness

A

desert

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11
Q

low growing vegetation; permafrost

A

tundra

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12
Q

perennial grasses and nonwoody plants

A

grasslands

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13
Q

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

A

D. decomposition; photosynthesis; respiration

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14
Q

what makes an organism a keystone species

A

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

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15
Q

which is NOT necessarily true of a keystone species?

A

d. they are the most abundant species in the community

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16
Q

which is NOT true of consumers

A

c. they are photosynthetic

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17
Q

producers are photosynthetic

A

true

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18
Q

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

A

a. j shape

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19
Q

the human population is growing exponentially largely due to

A

all of the above

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20
Q

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

A

B. difference between birth and death

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21
Q

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

A

c. birth rate> death rate; immigration> emigration

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22
Q

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

A

allow prey populations to remain above carrying capacity

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23
Q

symbiosis describes

A

species living in close association with each other

24
Q

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

A

ecology

25
Q

how an individual organism fares in its surroundings

A

individual level

26
Q

interacting populations of different species

A

community

27
Q

species interacting with other species and the environment

A

ecosystem

28
Q

organisms distributed in geographic space;

depends on resources and interactions with other members of the population;

reflect behavioral or ecological adaption

A

distribution pattern

29
Q

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

A

random distribution

30
Q

this type of distribution occurs when resources are unevenly distributed across the landscape ;

or when social behavior dictates grouping

A

clumped distribution

31
Q

this type of distribution results from territorial behavior

A

uniform distribution

32
Q

difference between the birth rate and the death rate is the

A

growth rate

33
Q

movement of individuals INTO a population

A

immigration

34
Q

movement of individuals OUT of a population

A

emigration

35
Q

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

A

exponential growth

36
Q

starts off fast and then levels off;

environmental factors will limit an organism’s ability to reproduce;

for example access to habitat

A

logistic growth

37
Q

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

A

habitat

38
Q

the maximum number of individuals that an environment can support given its space and resources;

upper limit on the size of any population

A

carrying capacity

39
Q

the size of the population may fluctuate around the environments _____

A

carrying capacity

40
Q

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

A

isle royale

41
Q

number of organisms per given area

A

population density

42
Q

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

such as a predation

A

density- dependent factors

43
Q

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

such as weather

A

density independent factors

44
Q

living components of an environment

A

biotic factors

45
Q

nonliving components of environment

A

abiotic factors

46
Q

what are factors that affect population size?

A

disease

climate change

47
Q

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

A

community

48
Q

predator prey interactions can involve

A

physical defense
toxicity
warning coloration
mimicry

49
Q

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

A

ecological niche

50
Q

one of the competing species will be driving to extinction

A

competitive exclusion principle

51
Q

symbiotic relationship in which both members benefit

A

mutualism

52
Q

symbiotic relationship in which one member benefits and other is unharmed

A

commensalism

53
Q

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

A

biodiversity

54
Q

the number of species living in a habitat or other unit

A

species richness

55
Q

species which serves as the base or bedrock of a community;

often primary producers and abundant

A

foundation species

56
Q

species on which other species depend

hold the community together

A

keystone species

57
Q

sequential appearance or disappearance of species over time is called

A

succession

Biology 102 (3 decks)

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