Ecosystem Interactions and Energy Flow

What is the main source of energy for most ecosystems?

• Water

• Sunlight

• Wind

• Soil

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DOK Level 1: Recall

Which of the following is an abiotic factor in a tropical rainforest ecosystem?

• Trees

• Birds

• Precipitation

• Insects

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DOK Level 1: Recall

What is the term for a group of the same species living in the same area?

• Community

• Ecosystem

• Population

• Biome

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DOK Level 1: Recall

Which of the following organisms is a producer in a marine ecosystem?

• Fish

• Algae

• Shark

• Crab

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DOK Level 1: Recall

What is the role of decomposers in an ecosystem?

• They produce energy from sunlight.

• They consume other animals.

• They break down dead organisms.

• They compete for resources.

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DOK Level 1: Recall

Which of the following options best describes a food web?

• A linear sequence of organisms, each feeding on the next

• A complex network of feeding relationships

• A single path of energy flow

• A diagram showing only producers and consumers

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DOK Level 2: Skill/Concept

How does the availability of resources affect the population of organisms in an ecosystem?

• It has no effect on the population size.

• It only affects the population of predators.

• It can increase or decrease the population size.

• It only affects the population of producers.

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DOK Level 2: Skill/Concept

What could happen to a rainforest ecosystem if a key predator is removed?

• The prey population could increase.

• The prey population could decrease.

• The ecosystem will remain unchanged.

• The number of producers will decrease.

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DOK Level 2: Skill/Concept

Which of the following interactions is an example of mutualism?

• A lion hunting a zebra

• A bee pollinating a flower

• A bird eating a worm

• A fox competing with a coyote

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DOK Level 2: Skill/Concept

How does energy flow through an ecosystem?

• From consumers to producers

• From decomposers to producers

• From producers to consumers

• From predators to prey

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DOK Level 2: Skill/Concept