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Food Web 1.1

Total questions: 20

Worksheet time: 38mins

Name
Class
Date
1.
A pyramid shape is used to show the amount of available energy at each trophic level because... 
a)
energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up. 
b)
energy increases up the food chain just like the pyramid shape gets smaller as you go up. 
c)
energy amounts are the same at each trophic level
2.
In this energy pyramid, what is the proper name for ANY ORGANISM ABOVE THE PRODUCER LEVEL?
a)
decomposers
b)
consumers
c)
producers
d)
omnivores
3.
What makes an energy pyramid different than a food web or chain?
a)
It shows energy flowing from the top of the chain and downward. 
b)
The tropic levels are the opposite
c)
It shows the amount of energy in each trophic level
d)
It shows specific predator/prey relationships
4.
Why are producers found at the base of the pyramid?
a)
They create all of the energy and therefore have the most energy of all of the trophic levels
b)
There are more plants than animals. 
c)
They begin the flow of energy in an ecosystem.
d)
All of these answers are correct. 
5.
True or False: Organisms will always stay in the same trophic level. 
a)
True-- an organism's trophic level is permanent based on the species it is. 
b)
False-- the trophic level an organism belongs to is based on what it is consuming in the food chain. 
6.
What is the sun's role in the energy pyramid?
a)
to produce chemical energy for the ecosystem.
b)
to provide radiant energy for producers to convert to chemical energy. 
c)
to start the energy flow of the ecosystem. 
d)
to provide mechanical energy for producers to convert to chemical energy. 
7.
What form of energy is in the food organisms consume?
a)
chemical energy
b)
thermal energy
c)
mechanical energy
d)
radiant energy
8.
Which organism in figure 1 contains the most available energy?
a)
plants
b)
mountain lions
c)
hawks
d)
none of the above
9.

The diagram represents different levels of a marine food pyramid. Between which two levels is the greatest amount of energy transferred

a)

R and Q

b)

S and R

c)

T and S

d)

U and T

10.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
11.
What is the ultimate ORIGINAL source of energy for living things
a)
Sugar
b)
Sun
c)
Moon
d)
Carbon Dioxide
12.
Based on the model, which consumers would receive the greatest amount of energy captured by the producers in their food chains? 
a)
Beluga Whale
b)
Polar Bear and Arctic Hare
c)
Ptarmigan and Arctic Bumble
d)
Lichens and Shrubs
13.

This diagram shows how energy flows through an eco-system. What is the first source of energy in this pyramid?

a)

sharks and large birds

b)

algae, plankton and seagrass

c)

herbivorous fish, crustaceans and sea urchins

d)

seals and carnivorous fish

14.

What kind of living thing can make its own food?

a)

producer

b)

consumer

c)

predator

d)

herbivore

15.

Several owls live in a forest. The owls prey on mice. Hawks also prey on mice. Which might happen if several hawks move to the forest where the owls live?

a)

The number of owls will increase, and the number of hawks will decrease.

b)

The number of mice will increase, and the number of owls will decrease.

c)

The number of owls and hawks will increase.

d)

The number of owls and mice will decrease.

16.

What role do plants play in a habitat?

a)

They produce food energy from sunlight.

b)

They break down dead matter.

c)

They are prey for predators.

d)

They recycle nutrients from dead matter.

17.
An energy pyramid represents what?
a)
How much sunlight is available for the ecosystem to use. 
b)
How much energy a particular organism needs. 
c)
How much energy is needed to build a pyramid. 
d)
The amount of energy available to the next 'feeder' in a food web.
18.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
19.
In this food pyramid, which level has the greatest amount of energy?
a)
Producers
b)
Primary Consumers
c)
Secondary Consumers
d)
Tertiary Consumers
20.

Write your first and last name

4 lines

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