Interactions Among Species Review

1. ________________ is a relationship in which both organisms benefit.

• Competition
• Mutualism
• Commensalism
• Parasitism

2. ________________ is a long-term relationship between organisms.

• Commensalism
• Symbiosis
• Competition
• Mutualism

3. _________________ is a relationship in which one organism benefits and the other is harmed.

• Mutualism
• Commensalism
• Parasitism
• Competition

4. Two organisms fighting for the same resource is _____________________.

• Mutualism
• Competition
• Commensalism
• Parastitism

5. ________________ is the reliance on other organisms to survive.

• Commensalism
• Symbiosis
• Mutualism
• Interdependence

6. ________________ is a relationship between two organisms in which one benefits, and the other is unaffected.

• Competition
• Commensalism
• Mutualism
• Parasitism

7. What is the main difference between commensalism and mutualism?

• Commensalism involves one organism benefitting and the other is harmed. In mutualism, both species benefit.
• Commensalism involves one organism benefitting and the other is unaffected. In mutualism, both species benefit.
• Commensalism involves the harm of both organisms. In mutualism, both species benefit.
• Commensalism involves one organism benefitting and the other is unaffected. In mutualism, one benefits and one is harmed..

8. Why are predator-prey relationships important in an ecosystem?

• They help balance out populations.
• Organisms must establish a hierarchy.
• There is not enough primary production.

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9. What are some limiting resources that organisms in a jungle may compete for? Select all that apply.

• Sunlight
• Food
• Habitat
• Sediment

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10. How would a cleaner fish and a larger fish exhibit a symbiotic relationship?

• Cleaner fish gives their parasites to the larger fish causing harm to it but benefitting the cleaner fish.
• Cleaner fish remove parasites and other bacteria from the larger fish. The cleaner fish gets food, and the large fish gets clean.
• The cleaner fish removes parasites from the larger fish but the larger fish is harmed because the parasites remove toxins from the larger fish.

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