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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
When water freezes, its volume
decreases greatly
stays the same
increases
decreases
2
A benefit to species living alone is?
decreased competition
greater genetic variability
decreased space needs
increased survival rate
3
Why are nonnative species a disturbance?
they have special growth needs
they increase mutations
they compete for resources
they cause increased biodiversity
4
Oxygen, soil, water, and sunlight are examples of
physical
chemical
abiotic
biotic
5
The atmosphere is mostly made up of
water vapor
Carbon Dioxide
Oxygen
Nitrogen
6
When plants produce a toxic sap to avoid predators but a bug adapts to the toxin... this is...
realized niche
fundamental niche
commensalism
coevolution
7
Photosynthesis increases atmospheric levels of
carbon dioxide
water
ozone
oxygen
8
What is NOT a part of Darwin's original theory of evolution
humans and apes evolved separately from monkeys
there is variation in all offspring
all species overproduce to ensure survival
organisms with favorable traits survive and reproduce
9
Cone bearing trees thrive in the ______________ biome.
grassland
deciduous
tundra
taiga
10
In an ecosystem what is NOT density dependent?
natural disaster
parasitism
competition
predation
11
The specific heat of water is very high this means...
it heats up slowly
it freezes quickly
evaporates at high temps
it heats up quickly
12
Zebra mussels are native to Poland and transported to the US. With no natural predators...
cause a huge decline in native clam and mussels
zebra mussels eventually die out
compete unsuccessfully
successfully share the niche with native populations
13
Ecologists represent the amount of potential food available for each trophic level with a(n)...
food web
energy flowchart
biomass pyramid
food chain
14
All organic molecules contain what element?
oxygen
hydrogen
carbon
nitrogen
15
Which set of environmental factors ONLY list biotic factors
nutrients, soil, water
clouds, sunlight, temperature
carnivores, herbivores, producers
air quality, flowers, insects
16
Which part of the food chain has the least energy available to it for its life processes?
herbivore
carnivore
producer
omnivore
17
Which of the following is a property of water that allows bugs to walk on the surface?
high specific heat
capillary action
cohesion
low freezing point
18
The study of embryology suggests all the following EXCEPT...
there are gills and tails in all vertebrate embryos
there are significant differences among embryos
there are very few differences btwn vertebrate development
vertebrates have common ancestry
19
A water molecule has ____ molecules of oxygen?
none of the above
three
one
two
20
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
21
If scientists want to determine how closely related two species are which data is most accurate
niches
behaviors
DNA's
homology
22
Which nutrient cycle is most affected by overuse of ammonia fertilizers?
Phosphorus
carbon
water
Nitrogen
23
What property makes it possible for water to travel all the way up to leaves in a tree?
polarity
adhesion
universal solvent
capillary action
24
Humans use this to pass on desired traits to the next generation of organisms
artificial fertilization
natural breeding
natural selection
selective breeding aka artifical selection
25
Overuse of antibiotics have impacted natural selection by...
all other genes have been eliminated
more offspring have been produced with the resistant trait
bacteria are now genetically isolated
beneficial mutations have decreased
26
Changes in DNA help drive
deamination events
acquired traits
amino acid coding
evolutionary change
27
Geologic Time Scales are reconstructed by...
examining written records from past cultures
examining homologous structures in fossils
comparing homologous structures in living species
comparing vestigial structures in living species
28
What happens to the amount of available energy in the pyramid as it moves up?
it decreases
it increases
it decreases then increases
it remains the same
29
The size of a food web is limited by the number
carnivores
producers
top predator
detrivores
30
The range or area occupied by a population is called?
ecosystem
niche
geographic distribution
carrying capacity
31
Two similar species of frogs have their ranges overlap, they will remain separate species if...
reproduce at different times of the year
they occupy different burrows
have different markings
eat different foods
32
Which is a hypothesis
presence of an enzyme increased rxn rate
the rxn rate increased 100%
introducing an enzyme into a rxn did not increase rate
when an enzyme is introduced the rxn rate will increase
33
How do humans obtain fossil fuels?
harvest it from the rainforest
pressure of the Earth transforms organic materials
fossil fuels are produced in the atmosphere
develop them in factories
34
If two populations are reproductively isolated from each other, they will most likely exhibit..
very few differences
different traits that allow survival in it's environment
guaranteed evolution into two different species
increased rates of mutation
35
What is the source of nearly all the energy for producers and consumers?
plants
sunlight
oxygen
nitrogen
36
Why is Evolution considered a theory?
it is not accepted by the scientific community
it is not proven
its ideas are supported by facts and inferences.
it cannot be tested
37
A measurable amount of data like the speed of light is considered a...
hypothesis
scientific theory
scientific law
scientific evaluation
38
Which is an example of a mutualistic relationship?
crabs eat the remains of dead fish
ants protect a tree on which they feed
young wasps prey on caterpillars
tapeworms in a dog's intestine
39
The water molecule is a polar molecule, that means
sinks when frozen
has a low heat capacity
it has an electric charge
it formed near the poles
40
An example of geographical isolation is
forest fire
river changing course
island attaching to a mainland
hurricane
41
The tendency for one extreme phenotype such as large size to be favored over average is called?
directional selection
stabilizing selection
natural selection
disruptive selection
42
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 niches
they occupy different habitats
43
Which kingdom is MOST LIKELY to contain organisms that are decomposers?
Kingdom Monera
Kingdom Plantae
Kingdom Animalia
Kingdom Fungi
44
Why are producers always found at the lowest trophic level?
producers are found in few numbers
consumers are eaten by a variety of producers
producers are larger than consumers
producers convert light energy into chemical energy
45
The bones in the front limbs of many mammals are similar in structure. This is called...
vestigial structures
analogous structures
embyonic parallels
homologous structures
46
The type of organism responsible for "fixing" nitrogen into a form that is usable is...
fungi
plants
bacteria
animals
47
All living things use nitrogen to
make sugar
reproduce
transport water
make proteins
48
What was the major contributor of oxygen to earth's early atmosphere?
photosynthesis
respiration
decompositon
ozone breakdown
49
When water freezes, its density
increases
decreases
increases greatly
stays the same
50
Mites obtain food by eating dead skin cells and neither harm or help humans. This is an ex of..
mutualism
parasitism
evolution
commensalism
