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Introduction to Ecology & Scientific Method Flashcards | StudBud
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Introduction to Ecology & Scientific Method
Introduction to Ecology & Scientific Method
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Biology Chapter 3 Miller Levine (and some chapter 1)
Flashcards
26 cards
F
Practice quiz
P
Host live
L
Questions
26
Answers
1
All life on earth exists in a region known as
Ecology
An ecosystem
The biosphere
A biome
2
A controlled variable is
a variable that stays the same in an experiment.
the subjects that aren't given treatment in an experiment.
a variable that changes as a result of the experiment.
a variable that the experimenter changes on purpose.
3
To be useful, a hypothesis must be
a guess
accurate
testable
detailed
4
In the image, why are the decomposers off to the side with arrows pointing to them?
They decompose all other organisms
Decomposers give energy to the rest of the organisms
They don't interact with the other organisms
3rd Trophic LevelThey are the top predators
5
A student designs an experiment to test whether pill bugs prefer light or dark.
IV = preference, DV = light or dark
IV = light or dark, DV = preference
6
Groups of different species that live together in a defined area make up a(an)
Ecosystem
Population
Community
Biosphere
7
The organisms at the bottom of a food chain or energy pyramid are
decomposers
sunlight
producers
consumers
8
In the biogeochemical cycle image below, how do humans impact the release of the nutrient?
By burning fossil fuels
By breathing it in
By absorbing it into the ocean
Through photosynthesis
9
In the image, the producers could also be known as the
1st Trophic Level
3rd Trophic Level
4th Trophic Level
2nd Trophic Level
10
In the image, why are the levels each smaller than the level below it?
The mass of organisms decreases
The organisms become more rare
Energy is lost as heat
Energy is lost as CO2
11
Living things do all of the following EXCEPT
respond to stimuli
breathe
maintain homeostasis
are made of cells
12
In the biogeochemical cycle image below, how does the nutrient enter living organisms?
Animals breathe it in
By burning fossil fuels
Through the roots of plants
Through photosynthesis
13
Compared to a food chain, a food web is
More realistic
Less complex
A way to show trophic levels
Shows fewer interactions
14
Which process brings water out of the ocean?
Evapination
Transpiration
Precipitation
Evaporation
15
The total mass of organisms at each trophic level can be shown in
a biomass pyramid
an energy pyramid
a biogeochemical pathway
a trophic pyramid
16
Nutrients flow through the ecosystem in
Biogeochemical cycles
Ecological pyaramids
Water cycles
Energy pyramids
17
Which of the following levels of organization contains all the rest?
ecyosystem
organism
biome
population
18
A series of steps where a fish eats a smaller fish, which eats algae is called a
Food web
Energy pyramid
Food chain
Mass pyramid
19
As you go up one trophic level, the amount of energy
that gets passed on is 10%
All of the other answers are true
lost is lost making heat
that gets lost is 90%
20
The thing that is unique to the phosphorus cycle is that
Phosphorus is never found in the soil
Phosphorus never enters the atmosphere
Phosphorus is only found in plants
Phosphorus is taken into plants leaves
21
In the image, the secondary consumers could also be known as the
Producers
4th Trophic Level
2nd Trophic Level
3rd Trophic Level
22
Where is inorganic carbon found?
In plants
In the atmosphere
In fossil fuels
In animals
23
Which of the following would best describe the students at BHS?
Individaul
Ecosystem
Population
Community
24
In the nitrogen cycle, how does nitrogen get from the atmosphere into the soil?
Absorbtion by plant roots
Photosynthesis by plants
Nitrogen fixation by bacteria
Denitrification by animals
25
A scientific law is
something tentative.
an explanation for why something occurs.
a rule you have to follow.
a summary of a pattern found in nature.
26
Autotrophs are organisms that
Obtain energy by eating only plants
Consume dead organisms
Make their own food using sunlight
Rely on other organisms for energy
