Understanding Echinoderms

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How do sand dollars and sea cucumbers contribute to the seafloor ecosystem?

By consuming dead animals

By feeding on sea stars

By avoiding burrowing

By keeping algae growth in check (correct)

What is the role of sea urchins in the ecosystem mentioned in the text?

Consuming dead animals

Oxygenating the seafloor

Feeding on sea kelp

Controlling algae growth (correct)

What negative impact can large populations of echinoderms have on the ecosystem?

Reducing sea kelp beds (correct)

Boosting biodiversity

Increasing algae diversity

Promoting coral growth

Why have purple sea urchins become overpopulated in the waters of the Pacific Northwest of the United States?

Loss of natural predators Signup and view all the answers

How do people help manage the overpopulation of sea urchins?

By harvesting them for food Signup and view all the answers

What is the primary diet of crown-of-thorns sea stars?

Live coral Signup and view all the answers

Which echinoderm species is known for cleaning the seafloor by consuming dead animals?

Sea stars Signup and view all the answers

What ecological role do sand dollars and sea cucumbers play in the seafloor ecosystem?

Oxygenating the seafloor Signup and view all the answers

What is primarily responsible for controlling algae growth in the seafloor ecosystem?

Sand dollars. Signup and view all the answers

Which echinoderm species is primarily responsible for oxygenating the seafloor?

Sand dollars and sea cucumbers Signup and view all the answers

Which echinoderm species is a food source for many other species?

Brittle stars, sea stars, and sea urchins Signup and view all the answers

Which echinoderm species helps control algae growth?

Sea urchins Signup and view all the answers

Which echinoderm species is known for cleaning the seafloor by consuming dead animals?

Sea stars Signup and view all the answers

What has contributed to the overpopulation of purple sea urchins in the Pacific Northwest?

Loss of natural predators and a warming climate Signup and view all the answers

How do people help manage the overpopulation of sea urchins?

By harvesting them for food and as a lime source for farmers Signup and view all the answers

Which echinoderm species causes severe damage to coral reefs if not controlled?

Crown-of-thorns sea stars Signup and view all the answers

What is the primary role of echinoderms in the ecosystem?

Maintaining ecological balance Signup and view all the answers

What negative impact can large populations of echinoderms have on the ecosystem?

Decimating sea kelp beds Signup and view all the answers

What is the primary diet of crown-of-thorns sea stars?

Live coral Signup and view all the answers

Understanding Echinoderms

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Questions and Answers

How do sand dollars and sea cucumbers contribute to the seafloor ecosystem?

What is the role of sea urchins in the ecosystem mentioned in the text?

What negative impact can large populations of echinoderms have on the ecosystem?

Why have purple sea urchins become overpopulated in the waters of the Pacific Northwest of the United States?

How do people help manage the overpopulation of sea urchins?

What is the primary diet of crown-of-thorns sea stars?

Which echinoderm species is known for cleaning the seafloor by consuming dead animals?

What ecological role do sand dollars and sea cucumbers play in the seafloor ecosystem?

What is primarily responsible for controlling algae growth in the seafloor ecosystem?

Which echinoderm species is primarily responsible for oxygenating the seafloor?

Which echinoderm species is a food source for many other species?

Which echinoderm species helps control algae growth?

Which echinoderm species is known for cleaning the seafloor by consuming dead animals?

What has contributed to the overpopulation of purple sea urchins in the Pacific Northwest?

How do people help manage the overpopulation of sea urchins?

Which echinoderm species causes severe damage to coral reefs if not controlled?

What is the primary role of echinoderms in the ecosystem?

What negative impact can large populations of echinoderms have on the ecosystem?

What is the primary diet of crown-of-thorns sea stars?

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