Symbiotic Relationships in Nature
Explore the fascinating world of symbiotic relationships, including mutualism, commensalism, and parasitism, with this engaging worksheet for Grade 7 Science.
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Symbiotic Relationships in Nature
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Read each question carefully and answer to the best of your ability. Some questions may require you to recall information about different types of symbiotic relationships.
1. Which type of symbiotic relationship benefits both organisms involved?
Parasitism
Commensalism
Mutualism
Predation
2. A bird builds its nest in a tree. The bird benefits from shelter, and the tree is neither helped nor harmed. This is an example of:
Mutualism
Parasitism
Commensalism
Competition
3. In a parasitic relationship, one organism, the , benefits while the other organism, the , is harmed.
4. Lichens are an example of because they are a close association between a fungus and an alga.
5. All symbiotic relationships are beneficial to both organisms involved.
True
False
6. The relationship between a clownfish and a sea anemone is an example of mutualism.
True
False
7. Describe the difference between commensalism and parasitism, providing an example for each.
Match each organism pair with the correct symbiotic relationship.
8. Tapeworm living in a human intestine
a. Mutualism
9. Oxpecker bird eating ticks off a zebra
b. Commensalism
10. Barnacles attached to a whale
c. Parasitism
This image shows a Lasius niger ant tending to Cinara tujafilina aphids on a Thuja orientalis plant. This is an example of mutualism, where the ants protect the aphids from predators in exchange for honeydew.
