WorksheetsEcosystems (Mid-Unit Review)
Total questions: 35
Worksheet time: 35mins
What does the arrow
represent in a food
web?
It shows which animals live next to
each other
The flow of water from one
organism to another
The flow of energy from one
organism to another
It shows how diseases are passed
from one organism to another
Where do krill get their energy?
Phytoplankton
Phytoplankton & Fish
Fish
Blue Whales
Which is true about this food web?
Elephant Seals get their energy from
penguins
Elephant Seals get their energy from
killer whales
Elephant Seals eat killer whales
Elephant Seals and penguins compete
for squid
Which is true about killer whales
and leopard seals?
Both compete for fish as a food source
Both are primary consumers
Both are considered producers
Both compete for penguins as a food
source
If seaweed and phytoplankton are
removed from the ecosystem what is
true about the populations of the
remaining organisms?
The populations will decrease
The populations will increase
No change will take place
Some populations will increase and some will decrease
If mice get a disease and
their population decreases
which statement is true?
The number of owls and grasshoppers will
increase
The number of owls will increase and the
number of grasshoppers will decrease.
The number of owls will decrease and the
number of grasshoppers will increase
All populations will decrease
Which organisms are the producers
in this food web?
Fox and Buzzard
Dragonfly, Berries, and Plantains
Berries and Plantains
Berries, Butterfly, and Greenfly
If foxes were removed from the
ecosystem which would be a true
statement?
The ecosystem would remain unaffected
Mice and rabbit populations would
decrease
Buzzards would have less competition
for food
Plantain populations would decrease
Mice and rabbits both compete for _____.
Foxes
Buzzards
Frogs
Plantains
Trees in an ecosystem
compete for which
abiotic factor(s)?
Sunlight
Water
Space
All of the Above
Which is an example of a
primary producer?
Small shrubs
Rabbits
Coyotes
Earthworms
About how much energy is lost
as it passes from one level to
the next in the ecosystem?
10%
90%
.1%
.01%
Primary producers get their
energy from _______________.
The Sun and photosynthesis
Primary consumers
Decomposers
Heat loss
Energy is __________ as it
flows through the
ecosystem.
Lost
Gained
Stabilized
Balanced
Which group (level) contains
the largest population and
energy in the ecosystem?
Primary producers
Secondary consumers
Tertiary consumers
Primary consumers
What kind of
relationship is a hawk
eating a snake?
Consumer – Producer
Host – Parasite
Predator – Prey
Producer - Consumer
What kind of
relationship is a vine
that has overtaken a
tree?
Consumer – Producer
Producer - Consumer
Parasite - Host
Predator – Prey
What kind of
relationship is a rabbit
that eats grasses?
Consumer – Producer
Host – Parasite
Predator – Prey
Teacher - Student
Which is considered a predator-prey
relationship from this
ecosystem?
Leopard seal and fish
Fish and phytoplankton
Crab and blue whale
Krill and penguin
Heartworms are a parasitic
roundworm that are spread from
host to host by mosquitos. What
happens to these parasites if the
host dies?
The parasites also die
The parasites survive for
years
The parasites move to
another host
The parasites perform CPR and revive the host
Which two organisms have a
consumer-producer relationship?
Blue whale and krill
Krill and phytoplankton
Fish and krill
Phytoplankton and Seaweed
What is a predator in
an ecosystem?
An organism that creates its
own food through
photosynthesis
An organism that is hunted for
food
An organism that hunts for food
An organism that lives on/in
another organism for survival
What is a prey in an
ecosystem?
An organism that creates its
own food through
photosynthesis
An organism that is hunted for
food
An organism that hunts for food
An organism that lives on/in
another organism for survival
What is a parasite in an
ecosystem?
An organism that creates its
own food through
photosynthesis
An organism that is hunted for
food
An organism that hunts for food
An organism that lives on/in
another organism for survival
What is a host in an
ecosystem?
An organism that creates its
own food through
photosynthesis
An organism that is fed upon
by a parasite and does not
benefit from the relationship
An organism that hunts for food
An organism that lives on/in
another organism for survival
What is a consumer in
an ecosystem?
An organism that creates its
own food through
photosynthesis
An organism that is hunted for
food
An organism that eats other
organisms for survival
An organism that lives on/in
another organism for survival
What is a biotic factor?
A nonliving thing that
influences or affects and
ecosystem
Anything living or nonliving in
an ecosystem
A living thing that influences or
affects an ecosystem
A chemical compound in an
ecosystem
What is an abiotic
factor?
A nonliving thing that
influences or affects and
ecosystem
Anything living or nonliving in
an ecosystem
A living thing that influences or
affects an ecosystem
A chemical compound in an
ecosystem
Which is not a biotic
factor?
Sunlight
bacteria
phytoplankton
small fish
Which of the following is a
biotic factor in an arctic
ecosystem?
Snow on the ground
Harsh winds in the atmosphere
Small shrubs with a shallow
root system
Shortened days because of the
tilt of the Earth
Which of the following are
abiotic factors in an marine
ecosystem?
Sunlight which allows producers to
perform photosynthesis
Seaweed that lives near the
surface of the water
Small fish that school together for
survival
Coral populations
Which of the following is a
biotic factor in a forest
ecosystem?
Rocks and pebbles in a stream
Water that flows down a small
hill
Mosses which live in trees
Sunlight which is able to
penetrate through the treetops.
Which of the following
organisms is a producer?
Mouse
Owl
Deer
Grasses
Which of the following
organisms is a
decomposer?
Mushrooms
Grasses
Small Shrubs
Coyotes
Which adaptation could
help a consumer from
being eaten?
Longer legs to run faster
Fur color to match the
environment
Staying in a pack
All of the above
