Science Fusion Unit 11 Lesson 3-6 Quiz

Which tool will allow you to observe small organisms living, surviving, and interacting with other elements in an ecosystem?

• magnifying glass

• cup

• goggles

• telescope

Invasive plants compete with native plants for resources. What is likely to happen to native plants that compete with fast growing invasive plants?

• Their numbers will decrease

• Their numbers will stay the same

• Their numbers will increase slightly

• Their numbers will increase greatly

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People are apart of food chains. What is the role of people in a food chain?

• carnivore

• consumer

• decomposer

• producer

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In a desert food chain, wild hogs eat cacti. Then, coyotes eat wild hogs. How does energy move in this food chain?

• From producers to consumers

• From consumers to producers

• From scavengers to herbivores

• From carnivores to scavengers

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At each level of an energy pyramid, 90% of the energy received from the lower level is used for life processes. Only 10% is stored and can be passed up to the next level. Which of the following statements is correct?

• One snake can feed many hawks

• Hawks should eat grass to obtain the most energy

• There must be the same number of plants as animals

• Producers are the most numerous group of organisms

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Ecosystems have producers, consumers, and decomposers. Which statement describes why decomposers are important in an ecosystem?

• They are herbivores and keep the population of plants

• They are carnivores and keep down the population of animals

• They produce more food for other organisms

• They break down dead plants and animals

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Which of these things can contribute to the flow and transfer of energy as a decomposer?

• bread

• leaves

• fungus

• rotting meat

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A tree in the forest grows old and dies. It gradually falls apart insdie and finally falls over. In time, fungus is visible on the fallen log. What is this process called?

• decomposition of the tree

• decomposition of the forest

• decomposition of the food chain

• decomposition of a decomposer

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In the early 1900s, rachers in Australia hunted the Tasmanian wolf widely because they believed it killed their sheep and cattle. At that time, what would have been a reasonable prediction about what would happen to the Tasmanian wolf?

• It woud thrive because it was an invasive species

• It would become extinct because of human actions

• It would move to another continent to flee hunters

• It would stop hunting sheep and cattle in order to survive

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Carrotwood is a fast growing landscape tree that is an invasive species. If humans introduced carrotwood into a new area, which would be its predictable effect on the ecosystem?

• It would die out rapidly

• It would contribute to greater diversity

• It would crowd out native plants and compete for resources

• It would create a stronger ecosystem for native species

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