stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Ecology Review Flashcards | StudBud
Explore
/
Ecology Review
Ecology Review
45 terms
·
StudBud Administration
·
289 plays
Imported from external platform
Flashcards
45 cards
F
Practice quiz
P
Host live
L
Questions
45
Answers
1
The process by which organisms keep everything inside their bodies within certain limits is
metabolism
homeostasis
evolution
photosynthesis
2
Which of the following is NOT a characteristic of all living things?
Ability to Move
Respond to Environment
Ability to Reproduce
Growth and Development
3
The movement of organisms into a range is called
population shift
emigration
immigration
carrying capacity
4
What breaks down all levels of a food web?
Herbivores
scavengers
decomposers
carnivores
5
Plants are
Omnivores
Primary consumers
Herbivores
Primary producers
6
What is the term for each step in the transfer of energy and matter within a food web?
energy path
food chain
trophic level
food pyramid
7
A wolf pack hunts, kills, and feeds on a moose. Inthis interaction, the wolves are
predators
hosts
mutualists
prey
8
Which of the following descriptions about the organization of an ecosystem is correct?
populations make up species, which make up communities
species make up communities, which make up populations
communities make up species, which make up populations
species make up populations, which make up communities
9
The algae at the beginning of the food chain pictured are
heterotrophs
decomposers
primary producers
primary consumers
10
What is at the base of all ecological pyramids?
Scavengers
Decomposers
Consumers
Producers
11
A symbiotic relationship in which both species benefit is
parasitism
commensalism
mutualism
predation
12
Each of the following is an abiotic factor in the environment EXCEPT:
plant life
temperature
soil type
rainfall
13
What is the most likely cause of the decrease in moosepopulation immediately after 1995?
A decrease in predators caused competition in the moose
Many moose reached old age and died
Overcrowding caused competition in the moose population
Poisonous plants killed off many moose
14
A word that means the same thing as a consumer is
producer
autotroph
heterotroph
carbohydrate
15
Which of the following is a biological aspect of an organism's niche?
the way it gets food
the water in the area
composition of soil
amount of sunlight
16
The following is the definition of what?
Niche
Role in an Ecosystem
habitat
species
17
The study of interactions among organisms, and between organisms and their environment is
Sociology
Economy
Ecology
Biology
18
Introduced species can threaten biodiversity because they can
cause desertification
cause biological magnification
crowd out native species
reduce the amount of fertile land
19
The lowest level of environmental complexity that includes living and nonliving factors is
ecosystem
biosphere
community
biome
20
Something that controls the growth or size of a population is a
growth factor
carrying capacity
limiting nutrient
limiting factor
21
The work of a scientist usually begins with
careful observations
creating experiments
testing a hypothesis
drawing conclusions
22
Which factor might NOT contribute to an exponential growth rate in a given population?
higher birthrates
reduced resources
lower death rates
less competition
23
Which is a biotic factor that affects the size of a population in a specific ecosystem?
concentration of oxygen
temperature
type of soil
# and types of predators
24
If the death rate of a population is greater than the birthrate, the population
increases
not enough information to tell
stays the same
decreases
25
What characteristic of living things does the picture show?
Grow and Develop
Made up of Cells
Need material and energy
Reproduce
26
Different species can share the same habitat, but competition among them is reduced if they
increase their populations
reproduce at different times
occupy different niches
eat less
27
Which are two ways a population can decrease in size?
decreased birth rate and emigration
emigration and increased birth rate
increased death rate and immigration
Immigration and emigration
28
As resources in a population become less available, the population
declines rapidly
increases slowly
reaches carrying capacity
enters a phase of exponential growth
29
Which would be least likely to be affected by adensity-dependent limiting factor?
a population with a high birthrate
a small, scattered population
a population with a high immigration rate
a large, dense population
30
No two species can occupy the same niche in the same habitat at the same time
unless the species require different abiotic factors
unless the species require different biotic factors
b/c of the competitive exclusion principle
b/c of interactions that shape the ecosystem
31
A personal preference or point of view is
a theory
a hypothesis
an inference
a bias
32
Which of the following tells you population density?
# of deaths per year
# of bacteria per square milimeter
# of births per year
# of frogs per year
33
A symbiotic relationship in which one organism isharmed and the other benefits is
Predation
Mutualism
Parasitism
Commensalism
34
The simplest grouping of more than one kind oforganism in the biosphere is
population
species
community
ecosystem
35
Human activities, such as damming rivers, are what type of limiting factors?
DI
they're not a limiting factor
depends on situation
DD
36
The various growth phases through which most populations go are represented on
a normal curve
an exponential growth curve
logistic growth curve
a population curve
37
How do most primary producers make their own food?
respiration
the soil
CO2
photosynthesis
38
All the interconnected feeding relationships in an ecosystem made up a food
web
network
interaction
chain
39
the number of individuals per unit area is a population's
population density
carrying capacity
population size
growth rate
40
Which of the following is NOT likely to be a limiting factor on the
sea otte
r population?
predation
disease
competition
drought
41
What animals eat both producers and consumers?
herbivores
autotrophs
omnivores
chemotrophs
42
The following shows the growth of bacteria. What word correctly describes the growth curve?
exponential
logistic
limiting
demographic
43
Which of the following is a density-independent limiting factor?
emigration
earthquake
parasitism
disease
44
An example of a human caused disturbance is
Wildfires
Forest clearing
A hurricane
Growing lichens
45
About what percent of energy in a trophic level is available to organisms at the next tlevel?
10
30
90
100
