Analyze Organism Interactions From Population Graphs
Written by Adi Ackerman, Head Teacher
"Analyze Organism Interactions From Population Graphs" is written for 7th Grade (Ages 12-13), and it covers NGSS MS-LS2-2. A 6th grader who is already steady on ecosystems can use it too, and an older student can use it as a short review.


2 pages in this set
7th grade science worksheet: name competition, predation or mutualism from population graphs of protozoa, fish and a vine and moth. Answer key included. Part of our symbiosis and predators ecosystems collection. Aligned to NGSS standards.
How do I use this worksheet?
Use Analyze Organism Interactions first for general interactions, then Test Symbiosis Claims for the three types of symbiosis.
What students will practice
- Students will name competition, predation or mutualism from the shape of a population graph.
- Students will point to graph evidence for each interaction in complete sentences.
- Students will predict what would happen to a predator if all its prey were removed.

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Curriculum Links
Next Generation Science Standards
Science · 7th Grade
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Browse the grade, subject, and topic this belongs to.
FAQ
How do I use this symbiosis and predators worksheet?
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Use Analyze Organism Interactions first for general interactions, then Test Symbiosis Claims for the three types of symbiosis.
What does this worksheet teach?
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Name competition, predation or mutualism from population graphs of protozoa, fish and a vine and moth. The directions on the page read: Read the text. Study each graph. Name each interaction and answer the questions. An answer key is included.
Can I use this symbiosis and predators worksheet for homeschool or classroom?
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Yes, both. We made it for 7th grade ecosystems, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.
What is mutualism?
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Mutualism is a relationship in which both species are helped, so their numbers rise together.
How is commensalism different from parasitism?
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In commensalism one species is helped and the other has no real change. In parasitism one species is helped and the other is harmed.
How do predator and prey graphs look?
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Predator numbers rise and fall a little after prey numbers do.
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Worksheet Details
| Grade | 7th Grade |
| Subject | Science |
| Topic | Ecosystems |
| Standard | MS-LS2-2 |
| Pages | 2 pages |
| Difficulty | Medium |
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