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2/23/2018 Ecosystems

https://app.masteryconnect.com/materials/1144563/print 1/17

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Question #1Which is the correct order of this food chain?

A) plants, crickets, snakes, frogs

B) snakes, frogs, crickets, plants

C) snakes, crickets, frogs, plants

D) plants, crickets, frogs, snakes

Question #2An animal that eats berries, insects and seeds would be placed in which classification?

A) carnivore

B) decomposer

C) herbivore

D) omnivore

Question #3Which group of organisms directly benefits from the nutrients that are recycled into theecosystem?

A) producers

B) herbivores

C) consumers

D) carnivores



Question #4Algae use energy from the Sun to make food. Which ecosystem role best classifies algae?

A decomposer

B primary consumer

C producer

D secondary consumer

Question #5The diagram shows the relationship between the organisms of a food web.

Which consumers in the food web are directly dependent on producers for energy?

A lizard and eagle

B snake and eagle

C lizard and snake

D grasshopper and mouse



Question #6What is the correct order of organisms according to the flow of energy in an ecosystem?

A producer → decomposer → herbivore → carnivore

B producer → herbivore → carnivore → decomposer

C decomposer → producer → carnivore → herbivore

D herbivore → producer → decomposer → carnivore

Question #7White-tailed deer are a species of deer commonly found in Mississippi.

Which term describes the white-tailed deer’s role in a food web?

A carnivore

B decomposer

C herbivore

D omnivore



Question #8The list shows how different organisms in a pond habitat obtain energy.

Which food chain correctly represents the energy flow in the pond habitat?

A snail → catfish → heron → algae

B catfish → snail → algae → heron

C algae → snail → catfish → heron

D heron → catfish → snail → algae

Question #9Which statement describes the primary role of decomposers?

A They provide shelter to other animals.

B They loosen the soil to increase its water content.

C They make food for plants and animals in the presence of sunlight.

D They recycle nutrients back to the soil, which plants utilize for growth.



Question #10The American alligator is a species of alligator that lives in Mississippi.

Which statement is true about the American alligator?

A The American alligator is primarily an herbivore because it consumes fish and birds.

B The American alligator is primarily an omnivore because it eats turtles and fish.

C The American alligator is primarily a carnivore because it eats amphibians and birds.

D The American alligator is primarily a decomposer because it eats snakes and turtles.

Question #11The horned owl prefers a forest habitat filled with oak, pine, and hickory trees. Which statement mostlikely describes what would happen to the horned owl population if all the pine trees were cut downwithin their habitat?

A The horned owl population would remain constant.

B The horned owl population would decrease.

C The horned owl population would increase.

D The horned owl population would become extinct.



Question #12Which event would cause the tadpole population to decrease at a local pond?

A The lily pad population increased.

B The pond received a large amount of rain.

C The snake population around the pond decreased.

D The fish population increased.

Question #13The diagram shows a food web of a mountain forest ecosystem.

Which change is most likely to have a positive effect on the population of the Bobcat in the ecosystem?

A increase in the population of the Mountain Lion

B increase in the population of the Mountain Goat

C decrease in the population of the Mouse

D decrease in the population of the Rabbit



Question #14In an ecosystem, grasshoppers are the main food source for opossums. The opossums are hunted bygreat horned owls and gray foxes. The population of opossums is reduced due to the spread of adisease.

What effect will the decrease in the opossum population have on other organisms of the ecosystem?

A The gray fox population will increase.

B The grasshopper population will increase.

C The grass cover in the region will increase.

D The great horned owl population will increase.



Question #15The diagram shows a grassland ecosystem.

The grasshopper population decreases due to disease. What change would most likely be observed inthe populations of the beetles and snails and why?

A They will decrease, as they will feed upon each other.

B They will increase, as the owl population will feed on more of the shrew and wood mousepopulations.

C They will decrease, as the wood mouse and shrew populations will feed on more of them.

D They will increase, as there will be more of the green plant population for them to feed upon.

Question #16Scientists have discovered an increase in the amount of green algae growing in Lake Waccamaw. Howwill the increase in the green algae population benefit the fish population of the lake?

A The green algae will provide more shelter for the fish.

B The green algae will provide more food for the fish.

C The green algae will create more space at the top of the lake for the fish.

D The green algae will decrease the number of predators that eat the fish.



Question #17Ghost crabs are a species of crab that are a main food source for sea birds found along the Outer Banks.

Which event would most likely happen if there was an increase in the seagull population in the samearea?

A The ghost crab population will decrease because of an increase in the risk of disease.

B The ghost crab population will decrease because of the increase in predators.

C The ghost crab population will decrease because of the decrease in space.

D The ghost crab population will decrease because of the decrease in food sources.



Question #18The diagram shows a food web.

Which organism will be affected the least by the removal of the mouse from the food web?

A cougar

B insects

C shrew

D snake



Question #19The diagram shows a food web of a grassland ecosystem.

What type of change in the rabbit population will be observed if the population of roadrunnersdecreases?

A The population of rabbits will increase, as coyotes would not feed on rabbits in the absence ofroadrunners.

B The population of rabbits will decrease, as it would be the only food for coyotes in the absence ofroadrunners.

C The population of rabbits will decrease, as rattlesnakes will feed on more grasses reducing the foodfor rabbits.

D The population of rabbits will increase, as hawks will feed on more rattlesnakes reducing thepredators of rabbits.



Question #20Study the bar graph that shows the number of sea turtle nests observed along North Carolina’s coastduring a hatching season.

According to the bar graph, which location most likely had the greatest increase in the sea turtlepredator population during that time?

A Cape Hatteras

B Oak Island

C Ocean Isle

D Topsail Island



Question #21Which feature of a pond ecosystem makes it different from a lake ecosystem?

A It is surrounded by land.

B It is a natural body of water.

C It mostly has animals like fish, turtles, and beavers.

D It mostly has a uniform temperature from top to bottom.

Question #22The table shows characteristics of two ecosystems.

Ecosystem A best summarizes which land-based ecosystem?

A desert

B forest

C grassland

D mountain



Question #23Which ecosystem would be best classified as a terrestrial ecosystem?

A estuary

B forest

C lake

D marsh

Question #24A student listed some features of two aquatic ecosystems.

Which is the correct classification of the two aquatic ecosystems based on the listed features?

A 1 and 2: pond ecosystem; 3 and 4: lake ecosystem

B 1 and 2: lake ecosystem; 3 and 4: ocean ecosystem

C 1 and 4: estuary ecosystem; 2 and 3: ocean ecosystem

D 1 and 4: lake ecosystem; 2 and 3: estuary ecosystem



Question #25A student listed some features of an ocean ecosystem. Which feature did the student include in the listincorrectly?

A Trees, shrubs, and grasses grow on the floor.

B Large bodies of salt water are divided by continents.

C Organisms like phytoplankton, crabs, sharks, and turtles are found in it.

D Factors like temperature, water depth, and salinity impact the types of organisms present.

Question #26A student organized a few organisms into two groups.

Which statement best describes the organisms in the two groups?

A Animals in Group A live in grassland ecosystems, while animals in Group B live in forestecosystems.

B Animals in Group A live in forest ecosystems, while animals in Group B live in aquatic ecosystems.

C Animals in Group A live in aquatic ecosystems, while animals in Group B live in forest ecosystems.

D Animals in Group A live in terrestrial ecosystems, while animals in Group B live in aquaticecosystems.



Question #27This desert has a harsh climate. It averages less than 10 inches of rain a year. This deserthas very hot days and cold nights, and only a limited number of plants and animals can livethere.

For what would desert plants most likely compete in this climate?

A) light

B) minerals

C) space

D) water

Question #28Use this food web to answer the question.

To which type of ecosystem does the food web belong?

A) forest

B) grassland

C) lake

D) salt marsh



Question #29Where in a forest ecosystem would the largest amount of earthworms most likely be found?

A) inside the bark of trees

B) inside flowering plants

C) mixed in the rocks of streams

D) mixed in decaying leaves and soil

Question #30An ecosystem can support many different organisms.How is this possible?

A) Organisms occupy different niches in an ecosystem.

B) Organisms compete for resources in the ecosystem.

C) Organisms have no relationships in the ecosystem.

D) Organisms have to have individual ecosystems.

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