Free Printable WorksheetScienceGrade 5Science Curriculum5-LS2-1

5.37 Role of Decomposers Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 5 Science worksheet provides structured practice on 5.37 Role of Decomposers. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Role of Decomposers - Which model or diagram best explains how and model how decomposers recycle matter to the environment and close matter cycles? (NGSS 5-LS2-1; CCSS: RI.5.3)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Grade 5

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 5.37 Role of Decomposers skill assessments:

Problem 1Difficulty: Mastery
Which model best explains how decomposers close matter cycles in a garden?
Atomato plant -> bird -> soil -> Sun
Btomato plant -> water hose -> bird
Ctomato plant -> caterpillar -> bird -> stop
Dtomato plant -> caterpillar -> bird, then dead matter and waste -> bacteria and fungi -> soil -> tomato plant
Solution & Explanation:This model includes decomposers and shows matter returning to the soil and then back to the producer, which closes the cycle.
Problem 2Difficulty: Mastery
A student is revising a meadow matter-cycle model. Which addition would most improve scientific accuracy?
AAdd more predators only.
BRemove all dead organisms from the model.
CInclude arrows showing waste and dead matter moving to decomposers and then back to soil and plants.
DReplace soil with sunlight.
Solution & Explanation:That addition shows the recycling step needed to close the matter cycle.
Problem 3Difficulty: Mastery
A rotting log is surrounded by richer soil and new moss. Which explanation best connects decomposers to both observations?
ADecomposers remove all matter from the area.
BDecomposition adds simpler materials to the environment that new producers such as moss can use.
CThe log became richer soil without any organisms.
DMoss only grows because logs create sunlight.
Solution & Explanation:Decomposers breaking down the log can add matter to the surrounding environment, helping new plants or moss grow.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 5 Science students. It aligns with educational standard 5-LS2-1 (Primary standard selected for prompt fields in this prompt cell: NGSS 5-LS2-1. Skill statement in this prompt cell: Which model or diagram best explains how and model how decomposers recycle matter to the environment and close matter cycles? Associated standards listed with this skill in this prompt cell: NGSS 5-LS2-1; CCSS: RI.5.3. Use this prompt-provided wording as the supporting standard description for this workflow.).

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