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Science 7 Topics 4-7 Review Unit 1 Flashcards | StudBud
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Science 7 Topics 4-7 Review Unit 1
Science 7 Topics 4-7 Review Unit 1
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Flashcards
28 cards
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Practice quiz
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Questions
28
Answers
1
Extripated species are...
gone off the planet forever
are no longer found in areas where they used to be
are almost extinct
take over the place they are introduced to
2
Increased carbon levels can have a negative impact on the environment
False
True
3
Examples of invasive (introduced) species are all EXCEPT
zebra mussels
scotch broom
salmon
gold fish
4
Decomposers...
grow on or in the dead or waster material
eat both producers and consumers
feed on dead or decaying plant or animal matter
eat only producers
5
An example of biological control is...
the black dot spurge beetle and the leafy spurge
pesticides
lygus bug feeding on alfalfa plants
DDT
6
Animals that only eat other animals are...
Carnivores
onmivores
herbivores
prey
7
Pyramid of numbers show the number of organisms in each level of the food chain
False
True
8
A niche is...
represents the number of organisms in an ecosystem
non living organisms in the environment
the role an organism plays in their envirnment
shows energy transfer between organisms
9
An example of primary succession is:
When new plants grow after a forest fire
When mosses grown after a lava flow
When new plants grow after an earth quake
When mosses grown in the mountains
10
All the following describe producers EXCEPT...
make life possible for all other organisms
use sun energy to make their own food
fill the consuming niche
are on the bottom of the food chain
11
A food web shows interconnected food chains
False
True
12
A direct predator prey relationship in this food chain is..
hawk and grasshopper
mouse and grasshopper
mouse and hawk
snake and grasshopper
13
One of the ways Carbon ENTERS the carbon cycle is....
photosynthesis
weathering
respiration (animals breathing out)
dissolving in the ocean
14
If prey population decreases, predator population will keep increasing.
True
False
15
Which is not a form of environmental monitoring?
Biological monitoring
Physical monitoring
Control monitoring
Chemical monitoring
16
Baseline data...
is at the base of the graph
monitors change through study plots
is a report that outlines how an activity will affect the environment
gives scientists a starting point to compare data
17
When pollutants build up in animals through the food chain this is called
biopollution
bioaccumulation
biology
biomass
18
Frogs don't make good indicator species
False
True
19
Condensation is
cold water vapour that cannot stay in the air-liquid made into clouds
water that is in the soil
the process where liquid water forms from condensation and falls as rain
water taken from plants leaves
20
What numbers could fill in the pyramid of numbers diagram? (answers go from producers to quaternary consumers)
10,000-5,000-3,000-2,000-1,000
1,000-2,000-3,000-5,000-10,000
10,000-5,000-3,000-2,000-5,000
5,000-10,000-5,000-3,000-2,000
21
Some species adapt better to changes caused by human activity than others?
True
False
22
The tertiary consumer here is...
hawk
mouse
grasshopper
snake
23
A food chain found in this food web is....
berries-greenfly-butterfly-snake
berries-greenfly-ladybird-dragonfly
plantain-mouse-rabbit-fox
plantain-rabbit-snake-fox
24
Fossil fuels are a renewable resource
True
False
25
Acid rain occurs when pollutants mix with water vapour to form precipitation with a pH above 8?
False
True
26
Evaporation is when liquid turns to vapour
True
False
27
Biotic organisms are not living
False
True
28
An invasive species...
controls other species in the area
has no natural predators and takes over the ecosystem
is when there are no species left on the earth
are only in Canada
