Question

which level of organization is characterized by a group of cells that work together to perform a common function?
○ organ
○ tissue
○ organ system
○ organism

Explanation:

To solve this, we recall the biological levels of organization:

• Cells are the basic unit.
• Tissues are groups of similar cells working together for a common function.
• Organs are groups of tissues.
• Organ systems are groups of organs.
• Organisms are whole living entities.

So the level with a group of cells working together is tissue.

Answer:

B. tissue