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Science 9 Final Exam Flashcards | StudBud
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Science 9 Final Exam
Science 9 Final Exam
50 terms
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#ecology #evolution #hydrosphere #experimental design
Flashcards
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Questions
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Answers
1
Which kingdom is MOST LIKELY to contain organisms that are decomposers?
Kingdom Animalia
Kingdom Monera
Kingdom Fungi
Kingdom Plantae
2
Why are producers always found at the lowest trophic level?
producers convert light energy into chemical energy
producers are found in few numbers
consumers are eaten by a variety of producers
producers are larger than consumers
3
Why are nonnative species a disturbance?
they have special growth needs
they compete for resources
they cause increased biodiversity
they increase mutations
4
The size of a food web is limited by the number
top predator
producers
carnivores
detrivores
5
Which nutrient cycle is most affected by overuse of ammonia fertilizers?
water
Phosphorus
Nitrogen
carbon
6
Cone bearing trees thrive in the ______________ biome.
tundra
taiga
deciduous
grassland
7
The water molecule is a polar molecule, that means
sinks when frozen
has a low heat capacity
it formed near the poles
it has an electric charge
8
Zebra mussels are native to Poland and transported to the US. With no natural predators...
successfully share the niche with native populations
zebra mussels eventually die out
compete unsuccessfully
cause a huge decline in native clam and mussels
9
Photosynthesis increases atmospheric levels of
carbon dioxide
ozone
water
oxygen
10
The bones in the front limbs of many mammals are similar in structure. This is called...
vestigial structures
analogous structures
embyonic parallels
homologous structures
11
One parrot species feeds on insects in a tree and coexists with a parakeet eating seeds bc...
they occupy different ecosystems
they occupy different communities
they occupy different habitats
they occupy different niches
12
Geologic Time Scales are reconstructed by...
comparing vestigial structures in living species
examining homologous structures in fossils
comparing homologous structures in living species
examining written records from past cultures
13
Mites obtain food by eating dead skin cells and neither harm or help humans. This is an ex of..
mutualism
parasitism
commensalism
evolution
14
Ecologists represent the amount of potential food available for each trophic level with a(n)...
food web
energy flowchart
biomass pyramid
food chain
15
The specific heat of water is very high this means...
it heats up slowly
it heats up quickly
evaporates at high temps
it freezes quickly
16
What happens to the amount of available energy in the pyramid as it moves up?
it decreases then increases
it decreases
it remains the same
it increases
17
What was the major contributor of oxygen to earth's early atmosphere?
ozone breakdown
decompositon
respiration
photosynthesis
18
What is an accurate description of the growth of a natural animal population?
it never changes
it continues to grow indefinitely
it is limited by environmental factors
it is genetically determined
19
Which of the following is a property of water that allows bugs to walk on the surface?
high specific heat
cohesion
low freezing point
capillary action
20
Oxygen, soil, water, and sunlight are examples of
chemical
physical
abiotic
biotic
21
A benefit to species living alone is?
increased survival rate
decreased competition
greater genetic variability
decreased space needs
22
Which set of environmental factors ONLY list biotic factors
nutrients, soil, water
air quality, flowers, insects
carnivores, herbivores, producers
clouds, sunlight, temperature
23
If two populations are reproductively isolated from each other, they will most likely exhibit..
different traits that allow survival in it's environment
very few differences
increased rates of mutation
guaranteed evolution into two different species
24
Overuse of antibiotics have impacted natural selection by...
beneficial mutations have decreased
more offspring have been produced with the resistant trait
bacteria are now genetically isolated
all other genes have been eliminated
25
All living things use nitrogen to
transport water
reproduce
make proteins
make sugar
26
When plants produce a toxic sap to avoid predators but a bug adapts to the toxin... this is...
realized niche
coevolution
fundamental niche
commensalism
27
Humans use this to pass on desired traits to the next generation of organisms
natural selection
selective breeding aka artifical selection
natural breeding
artificial fertilization
28
An example of geographical isolation is
hurricane
forest fire
island attaching to a mainland
river changing course
29
Changes in DNA help drive
deamination events
evolutionary change
acquired traits
amino acid coding
30
Two similar species of frogs have their ranges overlap, they will remain separate species if...
they occupy different burrows
have different markings
reproduce at different times of the year
eat different foods
31
When water freezes, its density
increases greatly
increases
stays the same
decreases
32
If scientists want to determine how closely related two species are which data is most accurate
DNA's
behaviors
homology
niches
33
The atmosphere is mostly made up of
Carbon Dioxide
water vapor
Oxygen
Nitrogen
34
What is NOT a part of Darwin's original theory of evolution
organisms with favorable traits survive and reproduce
all species overproduce to ensure survival
there is variation in all offspring
humans and apes evolved separately from monkeys
35
All organic molecules contain what element?
nitrogen
carbon
oxygen
hydrogen
36
The study of embryology suggests all the following EXCEPT...
there are very few differences btwn vertebrate development
there are gills and tails in all vertebrate embryos
vertebrates have common ancestry
there are significant differences among embryos
37
The tendency for one extreme phenotype such as large size to be favored over average is called?
stabilizing selection
natural selection
disruptive selection
directional selection
38
Which part of the food chain has the least energy available to it for its life processes?
producer
omnivore
carnivore
herbivore
39
A water molecule has ____ molecules of oxygen?
one
two
none of the above
three
40
When water freezes, its volume
increases
stays the same
decreases greatly
decreases
41
Which is an example of a mutualistic relationship?
tapeworms in a dog's intestine
crabs eat the remains of dead fish
young wasps prey on caterpillars
ants protect a tree on which they feed
42
A measurable amount of data like the speed of light is considered a...
scientific evaluation
scientific law
scientific theory
hypothesis
43
The range or area occupied by a population is called?
ecosystem
carrying capacity
geographic distribution
niche
44
In an ecosystem what is NOT density dependent?
parasitism
competition
natural disaster
predation
45
Why is Evolution considered a theory?
it is not proven
it cannot be tested
its ideas are supported by facts and inferences.
it is not accepted by the scientific community
46
How do humans obtain fossil fuels?
fossil fuels are produced in the atmosphere
harvest it from the rainforest
develop them in factories
pressure of the Earth transforms organic materials
47
What property makes it possible for water to travel all the way up to leaves in a tree?
adhesion
capillary action
universal solvent
polarity
48
What is the source of nearly all the energy for producers and consumers?
sunlight
plants
oxygen
nitrogen
49
The type of organism responsible for "fixing" nitrogen into a form that is usable is...
bacteria
fungi
animals
plants
50
Which is a hypothesis
presence of an enzyme increased rxn rate
when an enzyme is introduced the rxn rate will increase
the rxn rate increased 100%
introducing an enzyme into a rxn did not increase rate
