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WorksheetsUnit 7: Ecosystems
Total questions: 22
Worksheet time: 14mins
A __________ is all of the living and nonliving things in a certain area.
population
community
species
ecosystem
A _______ is a group of similar organisms that can breed and produce fertile offspring.
population
community
species
ecosystem
A _______ is all the different populations that live together in an area.
population
community
species
ecosystem
A __________ is all the members of one species that live together in an area.
population
community
species
ecosystem
The biosphere is ___________
all organisms in a particular area
all organisms on earth
all organisms and the part of Earth where they exist
the Earth
In the example food chain of grass>mouse>snake>hawk>mushroom, the mouse is a ________
producer
primary consumer
secondary consumer
tertiary consumer
In the example food chain of grass>mouse>snake>hawk>mushroom, the mushroom is a _______.
producer
consumer
decomposer
In ocean life, a food chain might look like this: phytoplankton>copepod>sardine>mackerel>tuna>shark. If an orca eats the shark, what level consumer would it be?
4
5
6
7
Select all of the following that are producers.
grass
soil
ants
trees
Food chains show simple connections between different organisms. An overlapping network of food chains is called a ____________.
food web
food cycle
consumer chain
consumer cycle
Producers require certain things in order to perform photosynthesis. Select everything that is needed.
sunlight
water
nitrogen
carbon dioxide
Select all products of photosynthesis.
water
oxygen
glucose
carbon monoxide
_______ is anything that has mass and takes up space.
atoms
matter
energy
light
A water molecule is made of ___ hydrogen atoms and ___ oxygen atoms.
1,2
2,1
2,3
3,2
A carbon dioxide molecule is made of ___ carbon atoms and ___ oxygen atoms.
3,4
4,3
2,1
1,2
What is the formula for glucose?
C6H6O6
C12H12O6
C6H12O8
C6H12O6
Carnivores only eat other animals. Herbivores only eat plants. Omnivores eat what?
only animals
only mushrooms
bacteria and plants
animals and plants
In an ecosystem, there are many different species that interact with each other. However, some species are VERY important to the ecosystem. These are called _____________.
alpha species
critical species
keystone species
primary species
If you were using the snap blocks to make a model of a water molecule, how many blocks would you need?
2
3
6
24
Balance the equation:
sunlight + ___CO2 + ___ H20 --> ___C6H12O6 + ___ O2
4,4,2,4
6,6,1,6
6,4,1,4
4,4,4,4
Select all that are cycled in an ecosystem.
energy
grass seeds
matter
soil
The law of conservation of matter says that matter can neither be ________ or ________, only transformed.
created, destroyed
created, maintained
destroyed, separated
separated, maintained
