Levels of Organization

What is the smallest unit of life?

• Cell

• Tissue

• Organ

• Organism

What level of organization is composed of a group of similar cells performing a specific function?

• Organism

• cell

• Tissue

• Ecosystem

What level of organization is made up of different organ systems working together?
Answer

• Organism

• cell

• Tissue

• Biosphere

What is the highest level of organization, including all ecosystems on Earth?

• Biosphere

• cell

• Tissue

• Organism

What level of organization consists of multiple tissues working together to perform a function?

• Organ

• Ecosystem

• Biosphere

• Tissue

What level of organization includes all living organisms in a specific area interacting with each other and their environment?

• Tissue

• Tissue

• cell

• Ecosystem