Levels of Organization
Grade 6 · Science · Cells and Organisms · Oregon, USA
Lesson Summary
Living things are organized from cells to tissues to organs to organ systems to the whole organism.
Explanation
In multi-cellular organisms, cells with the same function group together to form tissues. For example, muscle cells form muscle tissue. Different tissues combine to form organs, like the heart, which contains muscle tissue, nerve tissue, and blood tissue. Organs that work together form organ systems, like the circulatory system (heart, blood vessels, blood). All the organ systems together make up the organism. This hierarchy, from cell to organism, shows how living things become increasingly complex.
Practice Questions
Q1: List the levels of organization from smallest to largest.
Answer: Cell, tissue, organ, organ system, organism.
Q2: What is a tissue?
Answer: A tissue is a group of similar cells that work together to perform a specific function.
Q3: The stomach is made of muscle tissue, lining tissue, and nerve tissue. What level of organization is the stomach?
Answer: The stomach is an organ because it is made of different tissues working together.
People Also Ask
What is Levels of Organization in Grade 6 Science?+
Levels of Organization is a lesson in the Cells and Organisms chapter of Grade 6 Science. It is part of the Oregon, USA school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Levels of Organization?+
Levels of Organization is taught in Grade 6 as part of the Science curriculum in Oregon, USA.
How can I help my child with Cells and Organisms in Science?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Cells and Organisms topics.