Mississippi Science ZOO.2.8
The Standard
- ZOO.2
- Students will understand the structure and function of phylum Porifera and phylum Cnidaria and how each adapts to their environments.
Enrichment: Utilize an engineering design process to create a simulated nematocyst, including possible biomimicry use. *
2026 Mississippi College- and Career-Readiness Standards for Science · Phyla Porifera and Cnidaria
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students build a safe model of a nematocyst with a trigger and a coiled thread inside a capsule. They test its release, change one part, and suggest a use for the design.
What Mastery Looks Like
- A student can show what triggers the model and what comes out of the capsule. They can use test results to explain a change and describe how controlled release could help deliver medicine to one spot.
Common Misconceptions
- Students may think the whole tentacle shoots out, rather than a thread from a capsule. They may think touch provides the force, rather than setting off a release driven by pressure inside the capsule.
How to Assess It
- On an exit ticket, ask students to sketch a safe model and label its trigger, capsule, and coiled thread. Have them name one test and one change they would make based on the result.
Lesson moves
Ways to Teach It
Wind a springy paper strip inside a paper cup, hold it with a clothespin, then release and measure how far it unfurls.
Ask, "Which part of our cup model acts as the trigger, and where does the model fail to match a real nematocyst?"
Draw three cup models with a clothespin, tape, or no latch; have pairs predict which will release most reliably and test them.
Sketch a medicine applicator that copies the nematocyst's triggered release to deliver a measured dose to one spot.
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Printable ZOO.2.8 Worksheet
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- BIO.5.9
Enrichment: Use an engineering design process to investigate and model current technological uses of biomimicry to address solutions to real-world problems. *
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