Levels of organization quiz with answers for Grade 7 science.

📚 Quick Study Guide

• 🔬 Cells: The basic unit of life. Think of them as the building blocks!
• тканей Tissues: Groups of similar cells performing a specific function (e.g., muscle tissue).
• органу Organs: Structures made of different tissues working together (e.g., the heart).
• ⚙️ Organ Systems: Groups of organs that cooperate to perform major body functions (e.g., the digestive system).
• 🌍 Organism: A complete living being, made up of organ systems.
• 🌿 Population: A group of organisms of the same species living in the same area.
• 🏘️ Community: All the different populations living together in an area.
• 🌳 Ecosystem: The community plus the physical environment (e.g., a forest).
• 🌎 Biosphere: The part of Earth where life exists, including all ecosystems.

🧪 Practice Quiz

1. Which of the following is the SMALLEST level of organization?
   1. Cells
   2. Tissues
   3. Organs
   4. Organ Systems
2. A group of similar cells performing a specific function is a(n):
   1. Organ
   2. Tissue
   3. Organ System
   4. Organism
3. The heart is an example of a(n):
   1. Cell
   2. Tissue
   3. Organ
   4. Organ System
4. Which level of organization includes all the other levels?
   1. Tissue
   2. Organ
   3. Organ System
   4. Organism
5. The digestive system is an example of a(n):
   1. Cell
   2. Tissue
   3. Organ
   4. Organ System
6. A group of zebras living together in the same area is a(n):
   1. Community
   2. Ecosystem
   3. Population
   4. Biosphere
7. All the different populations living together in an area form a(n):
   1. Organism
   2. Ecosystem
   3. Population
   4. Community