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Unit 2 (Ch 3, 4, and 5) Review Flashcards | StudBud
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Unit 2 (Ch 3, 4, and 5) Review
What is a limiting factor?
What is a simple definition of ecology?
Unit 2 (Ch 3, 4, and 5) Review
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1
What is a simple definition of ecology?
The study of life
The study of money
The study of economy
The study of interactions
2
What is a limiting factor?
Something that is no concern in logistic growth
Something that increases growth of a population
Anything that limits the growth of a population
Something that only affects exponential growth
3
Why do organisms need nutrients?
because they are delicious
energy
to carry out life functions and processes
4
What organisms would dominate in a climax community?
Moss
Trees
Grasses
Shrubs
5
What are primary producers?
Animals
Plants
The base of any food chain
The top of the food chain
6
What organisms are important in nitrogen fixation and where do they live?
Bacteria; live on roots of legumes
bacteria; in organisms
bacteria; on the surfaces of foods
bacteria; in dirt
7
What is NOT an example of density-dependent limiting factors?
Disease
Predation
Weather
Competition
8
What is exponential growth?
You grow faster the larger the population gets
You grow slower the larger the population gets
You grow the same regardless of population size
You grow faster the smaller the population gets
9
What is logistic growth?
Growth is always very slow
Following exponential growth, growth slows then stops
Following exponential growth, growth immediately stops
Growth varies between periods of fast and slow growth
10
What type of autotroph can make energy without sunlight?
a chemosynthetic autotroph
a photoheterotroph
mushroom
your mom
11
What is a food web?
Food chains are more complex
a complex network of feeding interactions
A food web is simpler than food chains
A series of steps of feeding interactions
12
Does matter always exist in its present state? Explain.
yes, its always changing
No, it is constantly changing
no, it only exists in the past
yes, it only exists in the past
13
What is needed for secondary succession to occur?
Grass
Soil
Water
Bunny Rabbits
14
Name each level of organization in the proper order
population biome bioshpere individual biome
biosphere biome community individual population
individual community biome biosphere population
Individual population community ecosystem biome biosphere
15
What lists ALL the factors that can affect a populations growth?
Immigration and emigration
Birthrate, death rate, Immigration
Birthrate, death rate, Immigration, emigration
Birth rate and death rate
16
Can organisms occupy different niches inside other organisms?
No
Yes
17
What type of disturbance would cause primary succession?
A volcano
A flood
A hurricane
A forest fire
18
What does the age structure of a population tell you?
The number of males and females of each age in a population
Tells you the number of males in a population
Tells you the number of males and females in a population
Tells you the number of females in a population
19
What uses does phosphorus have in living organisms?
component of DNA and RNA
to make proteins
makes them burn
makes carbs
20
What level of organization brings in non-living factors?
nature systems
solar system
math systems
Ecosystem
21
How is population density different from population distribution?
Density=how crowded, Distribution=how they're spaced out
Density is more important
Density=how they're spaced out, Distribution=how crowded
Distribution is more important
22
What type of energy do plants use to make sugar?
sunlight
nuclear energy
energy
normal energy
23
What is mutualism?
Symbiosis where one benefits and one is unaffected
Symbiosis where both organisms benefit
Symbiosis where one benefits and one is harmed
24
What is the greenhouse effect?
A natural phenomenon that maintains earth's temperature
A totally man-made problem
The way that light gets to earth
Another name for photosynthesis
25
Which region is the warmest?
Polar
Tropical
Temperate
26
What is a habitat?
What organisms eat
Where an organism lives
What an organism does
Where an organism doesnt live
27
Why does earth have 3 climate zones?
Latitude causes unequal heat distribution
Longitude causes equal heat distribution
Longitude causes unequal heat distribution
Latitude causes equal heat distribution
28
What is the difference in biotic and abiotic factors?
Biotic = nonliving; Abiotic = living
Abiotic will kill you, biotic wont
Biotic will kill you, abiotic wont
Biotic = living; Abiotic = nonliving
29
What is demography?
The study of animal populations
The study of human population
The study of graphs
The study of democracy
30
What can cause succession to start over?
Pigeons
Animals
Another disturbance
Bears
31
Can energy be recycled?
Yes
No
32
What does our body release as a result of chemical reactions required to sustain our life?
shelter
water
oxygen
heat
33
What is the difference between Immigration and emigration?
Immigration makes your population smaller
Immigration = out, emigration = in
Emigration makes your population bigger
Immigration = in, emigration = out
34
if an organism eats an insect is it herbivore or carnivore?
carnivore
herbivore
neither
both
35
What is the demographic transition?
A transition from low birth/death rates to high birth/death
A transition from high birth/death rates to low birth/death
Transition from low Birth/High Death to Low Death/High birth
Transition from High Birth/Low Death to High Death/Low birth
36
Can nutrients be recycled?
Yes
No
37
What is needed for the photic zone?
Enough light for photosynthesis
An algal bloom
Enough light for chemosynthesis
Too little light for photosynthesis
38
What is a freshwater wetland?
A lake
A river
A swamp
A bog
39
What is commensalism?
Symbiosis where one benefits and one is harmed
Symbiosis where both organisms benefit
Symbiosis where one benefits and one is unaffected
40
Which does NOT correctly match a stage of the demographic transition?
Stage 3 = Low Birth/Low Death
Stage 2 = High Death/Low Birth
Stage 2 = High Birth/Low Death
Stage 1 = High Death/High Birth
41
Generally speaking, where do decomposers lie on a food web?
inside, towards the bottom
outside, towards the bottom
inside, to the side
outside, to the side
42
What is parasitism?
Symbiosis where one benefits and one is unaffected
Symbiosis where both organisms benefit
Symbiosis where one benefits and one is harmed
43
Which is NOT a nutrient present in aquatic ecosystems?
Nitrogen
Oxygen
Potassium
Sulfur
44
What is carrying capacity?
The amount of biomass in the ecosystem
The maximum number of organisms an environment can support
The maximum number of prey a predator can consume
How much food is available
45
What is the term used to represent each step in a food chain or web?
trophic level
micro level
normal level
sea level
46
Why does succession take place?
Because minor disturbances don't change much
Organisms change the environment making it better for others
Because life is never completely wiped out in succession
Organisms change the environment making it worse for others
47
What is geographic distribution?
How the continents are spaced out
How organisms are spread out within a population
Where an organism can be found
How crowded a population is
48
Which is an example of a density-independent limiting factor?
Competition
Weather
Predation
Disease
49
Which is NOT a way carbon cycles through the biosphere?
Decomposition
Burning fossil fuels
Erosion
Photosynthesis
50
What is an estuary?
a river that forms when a river meets the sea
a lake that forms when a river meets the sea
A wetland that forms when a river meets the sea
a wetland that forms when the sea meets the ocean
51
If a predators population decreases, what would happen to the prey population
it would stay the same
it would decrease
It would increase
it would go down
52
Complete the sentence about the competitive exclusion principle: No two species can have the...
same place at the same time
same niche in the same place
same niche in the same place at the same time
same niche at the same time
53
What event led to exponential human growth?
Development of Agriculture
World War I
World War II
Industrial Revolution
54
What is the difference between weather and climate?
Climate changes, weather doesnt
Weather is smaller than climate
Weather = day to day, Climate = average over time
Weather = average over time, Climate = day to day
