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Test: Food Webs & Energy Pyramids

Total questions: 20

Worksheet time: 12mins

Name
Class
Date
1.
The producers in an ecosystem contain a certain amount of energy. What percentage of this energy is available to the first-level consumers?
a)
10 percent
b)
33 percent
c)
75 percent
d)
100 percent
2.
Many of the producers in an ecosystem die. How will this affect the stability of the ecosystem?
a)
The ecosystem will become unstable, because there will be too many organisms for food sources.
b)
The ecosystem will become unstable because fewer organisms will be available as basses for food chains.
c)
The ecosystem will become more stable, because more organisms will be available as food sources.
d)
The stability of the ecosystem will not be affected.
3.
Decomposers are important in the environment because they
a)
Convert large molecules into simpler molecules that can then be recycled.
b)
Release heat from large molecules so that the heat can be recycled through the ecosystem
c)
Can take in carbon dioxide and convert it into oxygen
d)
Convert molecules of dead organisms into permanent biotic parts of an ecosystem.
4.
An ecosystem includes producers, first-level consumers, second-level consumers, and third-level consumers. To which of these groups is the least amount of energy available?
a)
Producers
b)
Third-level consumers
c)
Second-level consumers
d)
First-level consumers
5.
If a population of frogs were to increase suddenly, which of the following would probably be harmed most?
a)
The predators that feed on the frogs
b)
The bushes that conceal the frogs
c)
The grasshoppers that are eaten by the frogs
d)
The plants that the grasshoppers feed on
6.
Question Image

What is the diet of all the organisms?

a)
cricket
1.

herbivore

b)
frog
2.

carnivore

low level predator

c)
hawk
3.

carnivore

top level predator

d)

Marsh grass

4.

autotroph

7.

Click on all the primary consumers.

8.
Question Image

Using the table match the following animals to correct statement

a)

Tree

1.

Gets energy from the sun to make its own food (producer)

b)

Snake

2.

Gets energy from the mouse and deer

c)

Frog

3.

Gets energy from the grasshopper

d)

Grass

4.

mouse and grasshopper compete for this producer

9.

The Sun provides energy to the plants. Some animals eat plants to survive. Other animals, like frogs, eat insects and other animals. What would most likely happen if the frog were removed from the ecosystem? The insect population would​ (a)  

Choose from the below words
Increase
Decrease
10.

The roadrunner is a desert bird that eats fruits and seeds. It also eats insects, spiders, scorpions, and rattlesnakes. What would likely happen if the roadrunner population disappeared from its ecosystem?​ The population of the scorpions would ​ ​ (a)  

Choose from the below words
increase
decrease
11.

Label the organisms with blank spaces.

12.

On the picture, touch the animal the is known as the APEX predator.

13.

Label the producers, first order consumers, and second order consumers

14.

Where do you have the MOST energy?

15.

A producer gets energy from the ​ (a)  

Choose from the below words
sun.
carnivores
omnivores
herbivores
other producers
16.

In this energy pyramid the ​ ​ (a)   are herbivores and make up the ​ (b)   level of the pyramid.

Choose from the below words
eagle
snakes
rabbits
plants
primary consumer
producer
secondary consumer
tertiary consumer
17.

Drag and drop the numbers into the table to show the energy available at each trophic level

18.

Where do you have the LEAST amount of energy?

19.

A food pyramid is shown to represent the transfer of energy in a food chain. Label the amount of energy available to each trophic level if producers have 10,000 kJ of energy.

20.

In the energy pyramid here, how much of the energy in each level gets transferred to the next level for the organisms to use for energy? ​ (a)  

Choose from the below words
10%
80%
100%
90%
1%
70%