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Energy pyramids/food webs2

Total questions: 33

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

The path of food energy in an ecosystem from plants to animals.

a)

omnivore

b)

food chain

c)

producer

d)

consumer

2.

An animal that eats only other animals

a)

producer

b)

herbivore

c)

omnivore

d)

carnivore

3.

An animal that eats both plants and animals

a)

carnivore

b)

omnivore

c)

herbivore

d)

producer

4.

Where do green plants get most of the energy they need to make their own food?

a)

carbon dioxide

b)

oxygen

c)

sunlight

d)

water

5.

What is the term for food chains that overlap

a)

consumer

b)

food web

c)

extinction

d)

producers

6.

What does a food chain show?

a)

how producers use sunlight to make food energy

b)

how living things depend on each other for food

c)

where resources are found in a habitat

d)

why plant and animal matter break down

7.

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.

8.

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.

9.
A diagram of a food web is shown below.Which organism receives the least amount of energy from the producers?
a)
Hawk
b)
Rabbit
c)
Grasshopper
d)
Mouse
10.
True or False. In this energy pyramid, the consumers on each level only get about 10 percent of energy that the trophic level before it has stored.
a)
True
b)
False
11.
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
12.
If only 10% of an organism's energy is available for the next trophic level, what happens with the other 90% of the energy?
a)
It is destroyed after it is used up.
b)
It is used for life processes or lost as body heat.
c)
It remains for the next trophic level IF the predator consumes ALL of the organism.
d)
It is lost completely as body heat. 
13.
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. 
14.
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. 
15.
Which organism in figure 1 contains the most available energy?
a)
plants
b)
mountain lions
c)
hawks
d)
none of the above
16.
The diagram is intended to show relationships in an ecosystem. What do the arrows represent?
a)
The direction of population migration
b)
Differences in dietary habits
c)
Progressively smaller organisms
d)
The direction of the energy flow
17.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
18.
All food chains begin with a ____________.
a)
primary consumer
b)
secondary consumer
c)
producers
d)
scavengers
19.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
20.
An animal that eats other animals is a....
a)
carnivore
b)
omnivore
c)
herbivore
d)
decomposer
21.
The image provided is an example of a(n):
a)
Producer
b)
Autotroph
c)
Consumer
d)
Insect
22.
How many primary consumers are there in this food web?
a)
1
b)
2
c)
3
d)
4
23.
Example of a decomposer
a)
fungus
b)
mouse
c)
plants
d)
frogs
24.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
25.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
26.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
27.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
28.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
29.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
30.
The image provided is an example of a(n):
a)
Autotroph
b)
Carnivore
c)
Herbivore
d)
Decomposer
31.

The populations of which organisms will most likely increase as a result of a disease that suddenly reduced the population of Texas horned lizards?

a)

Grasses and ants

b)

Ants and grasshoppers

c)

Grasshoppers and Texas Cottonmouths

d)

Texas cottonmouths and red shouldered hawks

32.

When constructing an energy pyramid of a swamp ecosystem, which of these would be placed at the top of the pyramid.

a)

Grass carp

b)

American Alligator

c)

Eastern mud turtle

d)

Great blue heron

33.

A heterotroph

a)

cannot make its own food.

b)

is able to make its food.

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