food webs quiz

Name: Date:

1. The picture below shows an energy pyramid.

What will most likely happen to the foxes and thewolves if the rabbits are removed?

A. The foxes will eat more wolves.

B. The foxes will eat fewer wolves.

C. There will be more foxes and wolves.

D. There will be fewer foxes and wolves.

2. The picture below shows an ocean bay food chain.

Sea otters move into the ocean bay. They eat allthe sea urchins. This change will cause the

A. kelp to have less food.

B. crabs to have more food.

C. sea ducks to have less food.

D. arctic foxes to have more food.

3. Which model correctly shows energy flow in afood chain?

A. B.

C. D.

page 1

4. A marine food web is shown in the diagram below.

Which organism below belongs in level 3 of thismarine food web?

A. salmon B. zooplankton

C. sea alga D. polar bear

5. A marine food web is shown below.

Which chart correctly shows three of the organismsaccording to their roles in cycling matter in themarine food web?

A.

B.

C.

D.

page 2 food webs quiz

6. The picture below shows the energy flow througha meadow community.

Which of the following would most likely occurto the populations within the community oforganisms immediately after a wildfire burns theenvironment?

A. Hawks would increase and foxes wouldincrease.

B. Hawks would decrease and foxes wouldincrease.

C. Meadow plants would increase and rabbitswould decrease.

D. Meadow plants would decrease and rabbitswould decrease.

7. Which statement best describes what will happenif the population of herbivores in the communitydecreases?

A. The population of foxes will increase.

B. The population of hawks will increase.

C. The population of rabbits will increase.

D. The population of meadow plants willincrease.

8. Which statement best describes the flow of energyas it passes through the organisms in the pyramid?

A. Energy flows through the organisms frombottom to top and increases at each level.

B. Energy flows through the organisms frombottom to top and decreases at each level.

C. Energy flows through the organisms from topto bottom and increases at each level.

D. Energy flows through the organisms from topto bottom and decreases at each level.

9. The diagram below shows a simple food web.

Which animal is classified as an omnivore?

A. red fox B. deer

C. black bear D. rabbit

page 3 food webs quiz

10. The diagram below shows a simple food web.

Which of the following animals might competewith the coyote in this food chain?

A.

B.

C.

D.

11. Decomposers are important in the food chainbecause they

A. produce their own food using light from theSun.

B. stop the flow of energy from one organism toanother.

C. break down dead organisms and recyclenutrients into the soil.

D. are microscopic and other organisms cannotconsume them.

12. The diagram below shows a marine food chain.

Phytoplankton → Zooplankton→ Herring → Salmon

The zooplankton in this food chain are

A. primary producers.

B. primary consumers.

C. secondary consumers.

D. tertiary consumers.

page 4 food webs quiz

13. The table below contains information about animaldiets.

Which energy pyramid best represents the data inthe table?

A.

B.

C.

D.

14. A forest-ecosystem food web is shown below.

If additional wrens are introduced into thisecosystem, there will most likely be an immediatedecrease in the

A. frog population.

B. snake population.

C. falcon population.

D. grasshopper population.

15. In a pond, the primary producer is a green alga,Spirogyra; the primary consumer is the crustacean,Daphnia; the secondary consumer is a small fish,the bluegill; and the tertiary consumer is a largerfish, the smallmouth bass. What changes can beexpected in the pond if the Daphnia are killedwith pesticides?

A. The Spirogyra population will probably die.

B. The bluegill population will probably increase.

C. The Daphnia population will eat somethingelse.

D. The smallmouth bass population will die.

page 5 food webs quiz

16. A food chain is shown below.

Grasses → Crickets → Field Mice → Hawks

For the food chain shown, which of the followingchanges would have the most severe consequences?

A. a drastic decrease in rainfall, causing drought

B. the poaching of predatory hawks by gamehunters

C. the introduction of a second predator that eatsfield mice

D. a parasitic infestation that reduces the cricketpopulation

17. Which of these organisms would most likely befound at the top of an energy pyramid?

A. clams B. sardines

C. sharks D. kelp

18. Which of these organisms would most likely befound at the bottom of a biomass pyramid?

A. giant squids B. sand sharks

C. sea cucumbers D. green algae

19. Examining Simple Communities

A group of organisms that interact with anddepend upon one another is called a community.The movement of matter and energy through acommunity can be studied by examining its foodweb. As organisms eat other organisms, energyand nutrients pass through various feeding levels.These feeding levels are called trophic levels. Thefollowing is a diagram of the energy and nutrientflow through a simple community.

Which group would most likely contain livingalgae?

A. Producers

B. First order consumers

C. Second order consumers

D. Decomposers

20. According to the diagram, nutrients from deadorganisms are released into the soil by the actionof .

A. producers

B. first order consumers

C. third order consumers

D. decomposers

page 6 food webs quiz

21.

A group of students on a field trip observedthe following organisms on an old oak tree:Woodpecker Honey Bee Oak SquirrelBeetleCaterpillar 1. Which of the following food chainsis most likely to be found in this ecosystem?

A. Caterpillar → honey bee → woodpecker

B. Oak tree → squirrel → woodpecker

C. Oak tree → caterpillar → woodpecker

D. Beetle → woodpecker → squirrel

22. The diagram shows part of an aquatic food webfor a stable lake ecosystem in Connecticut.

What is the source of energy for the algae?

A. waves

B. sunlight

C. bacteria

D. rotifers, water fleas and tadpoles

23. Ecosystems are composed of all living andnonliving components in an area. Food websshow the flow of nutrients and energy within anecosystem.

Use the food web to answer the followingquestions.

Suppose that a new predator of the rabbit migratedto this ecosystem. What is the most likely initialeffect on the other organisms?

A. More competition among the mice for food

B. More competition among the hawks for food

C. Less competition among snakes for food

D. Less grass available for food

24. A chemical pesticide was applied to an area of thisecosystem by a landowner to control the mousepopulation. There was a decrease in the mousepopulation due to the presence of this pesticide.Which one of the following would most likelyoccur first due to this change in the ecosystem?

A. The amount of grass would decrease.

B. The snake population would increase.

C. The rabbit food supply would increase.

D. The snake food supply would increase.

page 7 food webs quiz

25. The available chemical energy in this ecosystem.

A. decreases as it flows from consumer toproducer

B. remains constant as it flows from consumer toproducer

C. decreases as it flows from producer toconsumer

D. increases as it flows from producer toconsumer

26. Which one of the following is true of grass in anecosystem?

A. It converts oxygen to glucose.

B. It produces carbon dioxide from oxygen andwater.

C. It produces glucose from carbon dioxide andwater.

D. It converts water to energy.

27. If animals eat plants to get energy, where doplants get their energy?

A. Soil B. Water C. Wind D. Sun

28. Interactions in an ecosystem result from thetransfer of matter and energy from producers toconsumers and eventually to decomposers.

What are the forms of energy transfer from#1 → #4?

A. Chemical energy to chemical energy

B. Light energy to chemical energy

C. Chemical energy to heat energy

D. Heat energy to mechanical energy

page 8 food webs quiz

29. A simple food chain is shown.

What is the source of food in this food chain?

A. Sun B. Frog

C. Grass D. Grasshopper

30. How would the removal of earthworms from thefood chain affect the other organisms?

A. The number of bass will increase.

B. The number of crayfish will decrease.

C. The crayfish will get their energy directlyfrom the Sun.

D. The number of bass and ospreys will increase.

page 9 food webs quiz

31. A student examines the information in the table.The student concludes that Organism W shouldbe placed at the base of the food web, torepresent the feeding relationships in the marineecosystem. However, the student later learns thatOrganism W’s cells do not contain chloroplasts.

Organism Behavior Movement

T Feeds on Organism U Mobile

U Feeds on Organisms V and W Mobile

V Is eaten by Organism U Mobile

W Is eaten by Organisms U and V Stationary

Which conclusion would be appropriate, based onthe new information?

A. Another organism in the marine ecosystem isa producer.

B. Organism W is a secondary consumer in themarine ecosystem.

C. The role of Organism T in the marineecosystem changes during its life.

D. This marine ecosystem does not have anyproducers.

32.

Wolves get energy from eating rabbits. Rabbitsget energy from eating grass. The grass makes itsown food energy. If lots of the wolves were killed,then

A. there would be more rabbits.

B. there would be fewer rabbits.

C. more grass would grow.

D. less grass would be eaten.

33. In ecosystems, the sun’s energy is transferredthrough food webs as shown below.

The sun’s energy is most directly available topeople through

A. path A. B. path B.

C. path C. D. path D.

34. We get energy from the food we eat. The energyin the food first comes from the

A. soil.

B. fertilizers used by farmers.

C. sun.

D. vitamins added by food manufacturers.

page 10 food webs quiz

35. Use the diagram below to answer the question.

In this energy pyramid, which organism wouldmost likely be in level 2?

A. bird B. fox

C. caterpillar D. tree

36. Use the diagram below to answer the question.

Which group of organisms is not represented inthe diagram above of a simple food web?

A. decomposers B. prey

C. consumers D. producers

37. Use the food chain below to answer thefollowing question.

What do the arrows in the food chain indicateabout the flow of energy in an ecosystem?

A. Energy is continuously recycled by theorganisms in an ecosystem.

B. Energy flows in one direction in an ecosystem,from producers to consumers.

C. More of the available energy in an ecosystemis given to large animals than to smallanimals.

D. Organisms at the end of the food chain receivemore energy than those at the beginning.

page 11 food webs quiz

38. Use the food web below to answer the followingquestion.

Which group is not represented in the food web?

A. producers

B. primary consumers

C. secondary consumers

D. decomposers

page 12 food webs quiz

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food webs quiz 10/03/2014

1.Answer: D

2.Answer: C

3.Answer: A

4.Answer: A

5.Answer: C

6.Answer: D

7.Answer: D

8.Answer: B

9.Answer: C

10.Answer: C

11.Answer: C

12.Answer: B

13.Answer: A

14.Answer: D

15.Answer: D

16.Answer: A

17.Answer: C

18.Answer: D

19.Answer: A

20.Answer: D

21.Answer:

22.Answer: B

23.Answer: B

24.Answer: C

25.Answer: C

26.Answer: C

27.Answer: D

28.Answer: B

29.Answer: C

30.Answer: B

31.Answer: A

32.Answer: A

33.Answer: B

34.Answer: C

35.Answer: C

36.Answer: A

37.Answer: B

38.Answer: D