Ecosystem 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

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

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

• Fish

• Algae

• Shark

• Crab

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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

Explain how energy flows through an ecosystem using a food web. Provide an example to support your explanation.

• Energy flows in a circular pattern, with producers and consumers exchanging roles.

• Energy flows in one direction, from producers to various levels of consumers, and is eventually lost as heat.

• Energy is recycled within the ecosystem, with no loss at any level.

• Energy flows from consumers to producers, with decomposers playing no role.

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NGSS.MS-LS2-3

What is an apex predator?

• A consumer that gets energy from the producer.

• The source of a food chain.

• A species that has only one natural predator.

• The top of a specific food chain.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

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

What is the likely effect on a marine ecosystem if a large amount of algae suddenly dies?

• Increase in oxygen levels

• Decrease in fish population

• Increase in water temperature

• Decrease in water clarity

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DOK Level 2: Skill/Concept

Which of the following options best describes the cycle of matter in an ecosystem?

• Matter is created and destroyed.

• Matter is recycled between living and non-living parts.

• Matter flows in one direction only.

• Matter is only used by producers.

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DOK Level 2: Skill/Concept

How do changes in the physical components of an ecosystem, such as temperature, affect populations?

• They have no effect on populations.

• They can lead to adaptations or migrations.

• They only affect plant populations.

• They only affect animal populations.

Tags

DOK Level 2: Skill/Concept