Ecosystems, Food Chains and Food Webs Quiz Review
Name: ______________________
Homebase: _____________Date: __________________
1. Read all of question 1 before you start working on it!
a) Make a big food chain cycle with the following in it:
owl, sun, caterpillar, small bird, tree, bacteria.
Use WORDS to represent each organism in your food chain NOT drawings.
Arrange it vertically (up and down) so that you have space to do the rest of 1.
Owl
Bacteria
Decomposer
tertiary consumer
top predator
Small bird secondary consumer
predator prey
Caterpillar
prey
Tree
primary consumer
producer
Sun
b) Write producer beside the producer(s).
c) Write decomposer beside the decomposer(s).
d) Write primary consumer beside the primary consumer(s).
e) Write secondary consumer beside the secondary consumer(s).
f) Write tertiary consumer beside the tertiary consumer(s).
g) Write predator beside the predator(s) or top predator beside the top predator(s)
h) Write prey beside the prey.
i) Draw and label a biomass pyramid for your food chain. DO NOT include the bacteria or sun in it.
Owl
Small bird
Caterpillar
Tree
The soil becomes polluted, as a result of the disposal phase of the materials economy.
j) List from greatest to least, the organisms that have the highest concentration of toxins in them.
___Owl, small bird, caterpillar, tree__________________
k) What organism would be affected the most by this pollution? The owl
Why?_It’s at the top of the food chain and the toxins will build up in it.
l) Which organism would be affected the least by this pollution? The tree
Why?_It’s at the bottom of the food chain so toxins are just starting to enter the food chain.
m) The different concentrations of toxins in each organism is a result of the process known as:
Bioaccumulation
Get page 1 checked for completion, then use the answer key to make corrections in red pen.
Completion &
Accuracy
Is it complete?
Is it accurate?
Always (100%)
Usually (88%)
Exemplary = 5 pts Proficient = 4.4 pts
Somewhat (76%)
Developing = 3.8 pts
Rarely (64%)
Emerging = 3.2 pts
2. Consider the Middle School Courtyard, and then:
a) List 10 items in its ecosystem. Answers may include: palm trees, ferns, grass, ants, birds,
benches, flowers, soil, red stones, tetherball, worms, red rubber, picnic tables, spiders, mud
and probably others.........anything living or non-living is okay
b)
List 6 items in its community. Answers may include: palm trees, ferns, grass, ants, birds,
worms, flower, spiders and probably others.......anything living is okay.
c) List 1 population. ALL of the _____________ (Any 1 organism from you community list).
d)
What is the habitat of that population? Should be the home of that population, i.e. for
plants/trees/worms it would be soil/ground, for birds/spiders it would be trees,
3. Rewrite the corrected food chain from 1a) below and use it for the following questions:
Tree à Caterpillar à Small bird à Owl
Mr. Hamaguchi decides to add more caterpillars to the ecosystem in question 1.
a) What would happen to the amount or size (Increase, Decrease or Stay The Same) of the other
organisms in your food chain?
Owls I Why? Because the owls will have more small birds to eat
Small Birds I Why? Because there are more caterpillars to eat
Trees D Why? Because the extra caterpillars are eating more leaves on the trees.
b) What would then happen to the population of the caterpillars? D Why? Because there are more
small birds to eat them.
4.
Short answer. Complete the questions below:
a) What is the difference between a community and an ecosystem? An ecosystem contains all the
living and non-living things while a community is just the living things
b) What is a decomposer? Decomposers feed on dead/decaying plants/animals, breaking them
down and then releasing nutrients back into the soil/ecosystem
What would happen to other organisms in an ecosystem if all of the decomposers died? All
populations/organisms would either decrease in number or leave the ecosystem
Why?_ If there were no decomposers, then nutrients wouldn’t get returned to the soil, so plants
wouldn’t be able to grow properly, so the primary consumers wouldn’t have enough to eat, so
they would decrease in number, and therefore so would all other consumers.
c) Why are producers and photosynthesis so important?
Producers/photosynthesis produce food/energy for entire food chains/webs/organisms.
Without them, there are no other organisms
5. a) Circle the organisms that are at the top of the following food web.
b) Put an H on top of all Herbivores.
c) Put a C on top of all Carnivores.
d) Put an O on top of all Omnivores.
e) Put a P on top of all Producers.
C
C
C
H
C
H
C
C
C
C
H
H
O
H
P
P
P
Get pages 2 and 3 checked for completion, then use the answer key to make corrections in red pen.
Completion &
Always (100%)
Usually (88%)
Somewhat (76%)
Rarely (64%)
Accuracy
Exemplary = 5 pts Proficient = 4.4 pts Developing = 3.8 pts Emerging = 3.2 pts
Is it complete?
Is it accurate?