Mississippi Science MAQ.6.5

ScienceGrades 9–12Marine and Aquatic Science I & II

The Standard

MAQ.6
Students will investigate characteristics of aquatic invertebrates.
Explain various life cycles found among animals (e.g., polyp and medusa in cnidarians, multiple hosts and stages in the platyhelminthic life cycle, and arthropod metamorphosis).

2026 Mississippi College- and Career-Readiness Standards for Science · Invertebrate Consumers

Teacher's field guide

What This Standard Means

What Students Need to Do

Students draw and explain the life cycles of a moon jelly, a fish fluke, and a crab. They track body changes, host switches, and stages that reproduce.

What Mastery Looks Like

A student can connect a moon jelly polyp to an ephyra and medusa. They can trace a fish fluke through a snail, fish, and bird, then explain how a crab larva changes before adulthood.

Common Misconceptions

Students may think a polyp and medusa are different species, or that a crab hatches as a small adult. They may think a fish fluke stays in one host for its whole life.

How to Assess It

Exit ticket: Fill in the blanks, then explain one body change and one host switch: moon jelly polyp → ___ → medusa; fish fluke snail → ___ → bird; crab zoea → ___ → juvenile.

Lesson moves

Ways to Teach It

  1. Give pairs printed stage cards for a moon jelly, fish fluke, and crab; have them arrange three cycles and mark host switches.

  2. Show photos of a moon jelly polyp and medusa; ask students to explain how both forms fit one life cycle.

  3. Play a stage-order relay with crab egg, zoea, megalopa, juvenile, and adult cards; have teams describe each body change.

  4. Show a photo of a fish with yellow grubs; ask students to trace the fluke through snail, fish, and fish-eating bird.

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