What are the levels of organization in living things?

From smallest to largest the levels on this sheet are cell, tissue, organ, organ system and organism. In a human, muscle cells form muscle tissue, tissues form the heart, and the heart and blood vessels form the circulatory system.

Why is yeast unicellular if mushrooms are multicellular?

Yeast and mushrooms are both fungi, but a yeast is a single cell and a mushroom is made of many cells. Unicellular and Multicellular Organisms uses this pair to show that a group can include both.

6th Grade From Cells to Organisms Worksheets

Ages 11-12 · Free previews · Print-ready PDFs

Written by Adi Ackerman, Head Teacher

Living things are built from cells, and organisms differ in how many cells they have and how those cells are organized. These two 6th grade worksheets, each with an answer key, start with one cell or many and end with the whole organism. Unicellular and Multicellular Organisms has students sort 12 organisms using a fact list, and Levels of Organization has them order the levels from cell to organism and sort human and plant examples. The sheets practice MS-LS1-1 and MS-LS1-3.

6th Grade Science Living Things From cells to organisms Clear All

Levels of Organization

Grade6th Grade

TopicLiving Things

Unicellular and Multicellular Organisms

Grade6th Grade

TopicLiving Things

More living things worksheets

Explore all of our 6th grade living things worksheets, covering cells, from cells to organisms, human body systems, heredity, and more.

Cells Human body systems Heredity Punnett squares Reproduction and plant growth Natural selection and adaptations Animal classification Photosynthesis and respiration

Frequently Asked Questions

A unicellular organism is one cell that does every job needed for life, such as an amoeba. A multicellular organism has many specialized cells that depend on one another, such as an oak tree or a human.

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