Ecological Relationships Worksheet
Explore various ecological relationships including mutualism, commensalism, parasitism, predation, and competition with this Grade 10 science worksheet.
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Ecological Relationships
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Read each question carefully and answer to the best of your ability. Provide detailed explanations where required.
1. Which ecological relationship benefits one species and harms the other?
Mutualism
Commensalism
Parasitism
Competition
2. What is the role of decomposers in an ecosystem?
Produce their own food
Consume producers
Break down dead organic matter
Compete with predators
3. In a food web, arrows indicate the flow of from one organism to another.
4. The type of relationship where both species benefit is called .
5. Explain the difference between a food chain and a food web.
6. Describe an example of a competitive relationship in an ecosystem.
7. Predation is a relationship where one organism hunts and kills another for food.
True
False
8. Commensalism benefits both organisms involved.
True
False
9. Analyze the food web below and answer the questions that follow.

a) Identify one producer, one primary consumer, and one secondary consumer from the food web.
b) If the population of rabbits dramatically decreased, what immediate effect would this have on the fox population? Explain your reasoning.