Classifying Living Things (Part 2)

What You'll Learn

Living things are organized into levels: cells form tissues, tissues form organs, organs form organ systems, and organ systems make up a complete organism.

Key Words

nucleus
membrane

Steps

Step 1 — Read

Read and learn: Living things are organized into levels: cells form tissues, tissues form organs, organs form organ systems, and organ systems make up a complete organism.

Step 2 — Do

Measure and record your data in a table.

Step 3 — Observe

Note any unexpected results.

Step 4 — Record

Share your findings with the class or a partner.

Check Your Understanding

Question 1

1 of 3

What do all living things have in common?