Explain how energy flows through an ecosystem.

Energy flows from producers to consumers to decomposers.

Energy flows from decomposers to producers to consumers.

Energy flows from consumers to producers to decomposers.

Energy flows from consumers to decomposers to producers.

Compare the roles of primary and secondary consumers in an ecosystem.

Primary consumers eat producers, while secondary consumers eat primary consumers.

Both consume producers directly.

Both are at the top of the food chain.

Both decompose organic material.

Which of the following best describes the relationship between domains and kingdoms?

Kingdoms are subdivisions of domains.

Domains are subdivisions of kingdoms.

Domains and kingdoms are the same.

Kingdoms are broader than domains.

How does the classification of organisms into domains help scientists?

It simplifies the study of organisms by grouping them based on similar characteristics.

It allows scientists to identify individual species more easily.

It helps in the conservation of endangered species.

It provides a way to measure the population of organisms.

Analyze the impact of removing decomposers from an ecosystem.

Nutrient cycling would be disrupted, leading to accumulation of dead matter.

There would be an increase in the number of producers.

Primary consumers would become decomposers.

Predict the effect on an ecosystem if all primary consumers were removed.

Producers would overpopulate, and secondary consumers would starve.

Secondary consumers would become primary consumers.

Decomposers would become primary consumers.

There would be no effect on the ecosystem.

Evaluate the importance of biodiversity within the kingdom Plantae for ecosystem stability.

High biodiversity in Plantae ensures a variety of food sources and habitats, contributing to ecosystem resilience.

Biodiversity in Plantae is not important for ecosystem stability.

Low biodiversity in Plantae leads to more efficient energy flow.

Biodiversity in Plantae only affects the animal kingdom.

Design a simple food chain using the following organisms: grass, rabbit, fox, and decomposer.

Grass → Rabbit → Fox → Decomposer

Grass → Fox → Rabbit → Decomposer

Rabbit → Grass → Fox → Decomposer

Decomposer → Grass → Rabbit → Fox

Assess the role of energy flow in maintaining the balance of an ecosystem.

Energy flow ensures that all organisms receive the energy they need to survive, maintaining balance.

Energy flow is not important for ecosystem balance.

Energy flow only affects producers.

Energy flow disrupts ecosystem balance.

What is the main difference between a primary and a tertiary consumer?

Primary consumers eat producers, while tertiary consumers eat secondary consumers.

Primary consumers are at the top of the food chain.

Tertiary consumers eat producers directly.

Which of the following best describes the energy flow in a food web?

Energy flows in one direction from producers to consumers to decomposers.

Energy flows in a circular pattern.

Energy flows from decomposers to producers to consumers.

Energy flows randomly between organisms.

How do decomposers contribute to the nutrient cycle in an ecosystem?

They break down dead organisms, returning nutrients to the soil.

They produce energy from sunlight.

Compare the characteristics of the kingdoms Plantae and Animalia.

Plantae are photosynthetic and multicellular, while Animalia are multicellular and heterotrophic.

Both are unicellular and photosynthetic.

Both are prokaryotic and multicellular.

Plantae are heterotrophic, while Animalia are photosynthetic.

What is the significance of trophic levels in an ecosystem?

They represent the flow of energy and nutrients through different levels of a food chain.

They indicate the number of organisms in an ecosystem.

They show the physical size of organisms.

They determine the lifespan of organisms.

Which of the following is a characteristic of the kingdom Protista?

Multicellular and photosynthetic

What is the primary role of producers in the energy flow of an ecosystem?

To convert solar energy into chemical energy through photosynthesis

Which of the following best describes the relationship between a secondary consumer and a tertiary consumer?

Tertiary consumers eat secondary consumers.

Secondary consumers eat tertiary consumers.

Both consume producers directly.

There is no relationship between them.

How does the removal of a top predator affect the trophic levels below it?

It can lead to an increase in the population of secondary consumers, which may decrease the population of primary consumers.

It has no effect on the trophic levels below.

It causes an increase in the number of producers.

It results in the extinction of all species in the ecosystem.

Predict the consequences of a decrease in the population of primary consumers in an ecosystem.

An increase in the population of producers and a decrease in the population of secondary consumers.

A decrease in the population of producers and an increase in the population of secondary consumers.

An increase in the population of decomposers.

Evaluate the impact of introducing a new species into an existing food web.

It can disrupt the balance of the food web by competing with native species for resources.

It will have no impact on the existing food web.

It will only affect the producers in the food web.

It will only affect the decomposers in the food web.

Design a food web using the following organisms: grass, grasshopper, frog, snake, hawk, and decomposer.

Grass → Grasshopper → Frog → Snake → Hawk → Decomposer

Grass → Grasshopper → Frog → Hawk → Snake → Decomposer

Grass → Grasshopper → Snake → Frog → Hawk → Decomposer

Grass → Grasshopper → Frog → Snake → Decomposer → Hawk

Assess the role of decomposers in maintaining the health of an ecosystem.

Decomposers recycle nutrients back into the ecosystem, supporting plant growth and maintaining soil health.

Decomposers are not important for ecosystem health.

Decomposers only affect the animal kingdom.

Decomposers increase the energy flow in an ecosystem.

What is the significance of the kingdom Monera in the classification system?

It includes all prokaryotic organisms, such as bacteria.

It includes all multicellular organisms.

It includes all eukaryotic organisms.

It includes all photosynthetic organisms.

Which of the following best describes the relationship between energy flow and trophic levels?

Energy flow decreases as it moves up the trophic levels.

Energy flow increases as it moves up the trophic levels.

Energy flow remains constant across all trophic levels.

Energy flow is not related to trophic levels.

The 8 levels of classification, most broad to most specific .

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Domain, Genus, Family, Order, Class, Phylum, Kingdom, Species

Domain, Species, Kingdom, Genus, Phylum, Family, Class, Order

Order, Kingdom, Species, Domain, Phylum, Family, Class, Genus

Exploring Ecosystems and Taxonomy

7th Grade

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Practice Problem

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Easy

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NGSS

MS-LS2-3, MS-LS2-2, MS-LS2-4

Standards-aligned

Kyle Beatty

Used 1+ times

FREE Resource

41 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the highest level of classification in the biological taxonomy?

Species

Genus

Domain

Kingdom

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a primary consumer in an ecosystem?

Grass

Rabbit

Hawk

Mushroom

How many kingdoms are there in the modern classification system?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a characteristic of a decomposer?

Produces its own food

Consumes plants

Breaks down dead organisms

Hunts other animals

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which domain would you classify humans?

Bacteria

Archaea

Eukarya

Protista

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a secondary consumer?

Grasshopper

Frog

Eagle

Algae

What is the primary role of producers in an ecosystem?

Decompose organic material

Consume other organisms

Convert solar energy into chemical energy

Provide shelter for animals

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41 questions

What is the highest level of classification in the biological taxonomy?

Which of the following is a primary consumer in an ecosystem?

How many kingdoms are there in the modern classification system?

Which of the following is a characteristic of a decomposer?

In which domain would you classify humans?

Which of the following is an example of a secondary consumer?

What is the primary role of producers in an ecosystem?

Which of the following is a characteristic of the kingdom Animalia?

Which level of taxonomy is more specific than family but broader than species?

Which of the following organisms is a tertiary consumer?

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