Interactions In EcoSystems Test
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In an ecosystem, birds depend on insects to survive. If someone spreads pesticide to control the insect population, which of the following is most likely to happen?
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The bird population will increase.
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The bird population will decrease.
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The bird population will decrease, then increase.
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The bird population will increase, then decrease.
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The 'Interactions In Ecosystems Test' assesses understanding of ecosystem dynamics, focusing on energy flow, species interactions, and the roles of organisms. It explores how changes like pesticide use affect these systems, enhancing ecological literacy.
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Corals have a symbiotic relationship with plant-like algae that grow inside them. How do the algae benefit the corals?
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The algae provide the corals with various nutrients.
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The algae help the corals make a hard outside coating.
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The algae allow the corals to live in deep ocean environments.
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The algae release a toxin that keeps predators away from the corals.
Correct Answer
A. The algae help the corals make a hard outside coating.Explanation
The algae help the corals make a hard outside coating. This is because the algae produce calcium carbonate, which is used by the corals to build their hard exoskeletons. The algae also provide the corals with oxygen and remove waste products, further aiding in the growth and maintenance of the hard outside coating.Rate this question:
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- 3.
Look at the following diagram below. Where is the greatest amount of energy?
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Plant
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Rabbit
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Snake
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Owl
Correct Answer
A. PlantExplanation
The greatest amount of energy is in the plant. Plants are primary producers in the food chain, meaning they convert sunlight into energy through photosynthesis. This energy is then transferred to herbivores like rabbits, who consume the plant. As energy moves up the food chain, each level loses some energy, so the greatest amount of energy is always found at the bottom of the chain, in this case, the plant.Rate this question:
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- 4.
How to carnivores obtain energy?
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They eat plants.
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They eat animals.
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They eat animals and plants.
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They eat the food they make.
Correct Answer
A. They eat animals.Explanation
Carnivores obtain energy by eating animals. Carnivores are organisms that primarily feed on the flesh of other animals. They have adapted to have sharp teeth and claws to capture and kill their prey. By consuming the tissues of other animals, carnivores obtain the necessary nutrients and energy to survive and thrive.Rate this question:
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- 5.
What role do decomposers play in ecosystems?
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They break down nitrogen and oxygen.
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They break down waste and dead matter.
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They provide nutrients for carnivores to make energy.
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They provide nutrients for omnivores to make energy.
Correct Answer
A. They break down waste and dead matter.Explanation
Decomposers play a crucial role in ecosystems by breaking down waste and dead matter. They break down organic material into simpler forms, such as nutrients, which can then be recycled back into the ecosystem. This process helps to release essential nutrients and minerals back into the soil, making them available for other organisms to use. Without decomposers, dead organisms and waste would accumulate, leading to a buildup of harmful substances and a lack of resources for other organisms.Rate this question:
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- 6.
All _____________________ are consumers. (plants, animals)
Correct Answer
animalsExplanation
This statement suggests that all animals are consumers. In other words, animals are organisms that obtain their energy by consuming other organisms or organic matter. This is in contrast to plants, which are typically producers, as they produce their own food through photosynthesis. Therefore, the correct answer is animals.Rate this question:
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Energy can flow through an ecosystem from a producer to a(n) __________________.(producer, herbivore)
Correct Answer
herbivoreExplanation
Energy flows through an ecosystem from a producer, such as plants or algae, to a herbivore. Producers convert sunlight into chemical energy through photosynthesis, and herbivores consume these producers to obtain energy. This transfer of energy is the basis of the food chain, as herbivores are then consumed by carnivores and omnivores, allowing energy to be passed along the ecosystem.Rate this question:
- 8.
Energy ________________ disappear. (does, does not)
Correct Answer
does notExplanation
The statement is expressing that energy does not disappear. This means that energy cannot be created or destroyed, but it can only be transformed from one form to another. This is in accordance with the law of conservation of energy, which states that the total energy of an isolated system remains constant over time.Rate this question:
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When new plants and animals are introduced into an ecosystem, they can cause changes. Suppose that people bring to an area a type of plant not normally found there. The new plants grow quickly in their new environment. What is one possible effect of the new plants on the plants that were already growing in the area? What might happen to herbivores that eat only the plants that were growing there? Explain your answers.
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Use the diagram of the food web below to describe the flow of energy in a food chain. Include at least three organisms in your description of the food chain. Identify each organism in your food chain as a producer, herbivore, omnivore, carnivore or decomposer.
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 18, 2010Quiz Created by
Jmlane
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