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Food webs and ecological pyramids

Total questions: 31

Worksheet time: 35mins

Name
Class
Date
1.
Use the diagram to answer the question.
The Mayfly is a food source for which 3 organisms?
a)
Frog, Dragon Fly and snake
b)
Frog, trout and dragon fly
c)
Frog, salamander and trout
d)
Frog and phytoplankton
2.
Use the diagram to answer the question.
The trout is a source of food for the human and the eagle. When there are more than one organism vying for the same source we call this____?
a)
Population
b)
Resources
c)
Community
d)
Competition
3.
What is the best explanation for an energy pyramid?
a)
It shows the FLOW of energy from one organism to the next. 
b)
It shows HOW much energy flows through a food web
c)
It shows the MEMBERS in a single organism
4.
True or False. In this Food Web Pyramid the consumers on each level only get about 10 percent of energy that the plants have stored.
a)
True
b)
False
5.
In this Food Web Pyramid what is the proper name for the organisms above the producer level at the bottom.
a)
herbivores
b)
consumers
c)
carnivores 
d)
omnivores
6.
The deer, grasshopper, and bird are all examples of which type of consumers on this food pyramid?
a)
decomposers
b)
omnivores
c)
carnivore
d)
herbivore
7.
The snake and the frog, are all examples of which type of consumers on this food pyramid?
a)
decomposers
b)
omnivores
c)
carnivore
d)
herbivore
8.
About how much percent of energy is passed on from one organism to to the next on a food web pyramid. 
a)
100 percent of all energy gets passed
b)
45 percent of all energy gets passed
c)
10 percent of all energy gets passed
d)
0 percent of all energy gets passed
9.

A plant is...

a)

an autotroph

b)

a heterotroph

c)

a primary consumer

d)

a carnivore

10.

A person who eats a chicken that ate grain is a ...

a)

primary producer

b)

primary consumer

c)

secondary consumer

d)

quaternary consumer

11.

A cow is...

a)

a primary consumer

b)

a heterotroph

c)

an herbivore

d)

all are correct

12.

Primary consumers eat...

a)

primary producers

b)

primary consumers

c)

secondary consumers

d)

quaternary consumers

13.

Autotrophs...

a)

make their own food

b)

are the base of the food chain

c)

are primary producers

d)

all are correct

14.

Secondary consumers eat...

a)

primary producers

b)

primary consumers

c)

tertiary consumers

d)

quaternary consumers

15.

A heterotroph...

a)

is an autotroph

b)

eats other organisms

c)

is a primary producer

d)

is an autotroph & a primary producer

16.

A top predator....

a)

has natural enemies

b)

doesn't eat meat

c)

is a heterotroph

d)

is a detrivore

17.

As nutritional energy passes through the food chain, energy...

a)

is lost

b)

is gained

c)

remains constant

d)

increases, then decreases

18.

What is the 1st trophic level of a food chain?

a)

primary producer

b)

primary consumer

c)

secondary consumer

d)

tertiary consumer

19.

All energy transformations in an ecosystem begin with ______.

a)

a scavenger

b)

the sun

c)

a decomposer

d)

a herbivore

20.

A deer population has significantly increased, the best hypothesis is ___________.

a)

the deer's main predator has been eliminated

b)

competition increased

c)

decreased water levels of local ponds

d)

organisms that rely on similar food sources migrated to the area

21.
Which event is the best example of competition between species in a pond?
a)
dragonflies landing on lily pads
b)
lizards and snakes lying in the sun
c)
hawks eating mice
d)
frogs and toads eating flies
22.

Which relationship describes predator/prey?

a)

hawks and shrubs

b)

mountain lion and deer

c)

frogs and trees

d)

grasses and crickets

23.

A system of food chains that shows the transfer of energy is termed a ____________.

a)

food web

b)

food chain

c)

prey

d)

predator

24.
The direction of the flow of energy in a food web is represented by ___.
a)
Light bulbs
b)
Dotted Lines
c)
Arrows
d)
Bubbles
25.

Using food web which of the following is a secondary consumer?

a)

snake

b)

worm

c)

butterfy

d)

squirrel

26.

Using the food web which of the following is a tertiary consumer?

a)

frog

b)

bird

c)

eagle

d)

worm

27.

Using the food web what would happen if the eagle became extinct?

a)

The frog population would decrease.

b)

The frog population would increase.

c)

The butterfly population would increase.

d)

The snake population would decrease.

28.

If fish were poisoned which organism would be affected?

a)

algae

b)

phytoplankton

c)

clams

d)

octopus

29.

Which organism is on the 2nd trophic level?

a)

clam

b)

algae

c)

octopus

d)

shark

30.

Using food web what is the highest trophic level?

a)

1

b)

2

c)

3

d)

5

31.

The graph shows that

a)

wolf population control the rabbit population

b)

the rabbit population control the wolf population

c)

the two populations do not affect each other

d)

wolves do not hunt rabbits

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