Ecosystem Quiz

How does resource availability affect organisms and populations in an ecosystem?

• A It has no impact.

• B It can lead to competition and changes in population sizes.

• C It only affects large organisms.

• D It only affects animals.

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What are examples of resources?

• A Air and sunlight.

• B Water, food, and living space.

• C Rocks and minerals.

• D Air.

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Which of the following is NOT a Utah ecosystem?

• A Desert

• B Ocean

• C Forest

• D Lakes

Predict what would happen to a desert foxes if its main food source rodents, rabbits, insects and fruits decreases significantly.

• A The fox’s population will increase.

• B The fox’s population will remain the same.

• C The fox’s population will decrease.

• D The fox population will not be affected

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Why is it important to analyze data in understanding the effects of resource availability?

• A It's not important.

• B Data helps in making predictions and understanding patterns.

• C Data is irrelevant in ecosystem studies.

• D Data is not used in the study of ecosystems

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In a Utah Deserts and Shrubs, black bears eat fishes, and fishes eat plankton. In the last 5 years, the sizes of the populations have been stable, but recently the bear’s population has increased. What will likely happen to the plankton?

• A increase. The larger black bear population will lead to fewer fishes. The smaller fishes population will need fewer energy storage molecules to reproduce, so they will eat fewer plankton.

• B increase. Because the fishes population decrease.

• C stay the same. Black bears do not eat plankton.

• D decrease. The larger black bear population will leave fewer energy storage molecules available in the ecosystem for the plankton population.

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What do woodpeckers and hawks need energy for?

• A flying

• B breathing

• C digesting food

• D all of the above

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A population of Mule deer lives in Utah Coniferous forests. Over 50 years, the size of the Mule deer population decreased. What best explains the decrease in the size of the deer population?

• A A lot of deer died and no deer were born.

• B Fewer deer were born than died.

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In Utah's ecosystems, which of the following animals primarily eats sparrows?

• A Hawks

• B Wolves

• C Foxes

• D Bears

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10 What role do sparrows play in Utah's grassland ecosystems?

• A they eat buckwheat seeds.

• b They are apex predators.

• c They are prey for larger birds.

• d They hibernate during winter.