Question

the heart is an example of which level of organization within an organism?
○ cell
○ organ
○ tissue
○ organ system

Explanation:

To determine the level of organization the heart represents, we analyze each option:

• A cell is the basic unit of life (e.g., a cardiac muscle cell), but the heart is not a single cell.
• An organ is a structure composed of different tissues working together to perform a specific function. The heart is made of muscle tissue, connective tissue, etc., and functions to pump blood, so it is an organ.
• A tissue is a group of similar cells (e.g., cardiac muscle tissue), but the heart has multiple tissue types, so it is not just a tissue.
• An organ system (e.g., circulatory system) consists of multiple organs working together, and the heart is one organ within the circulatory system, not the system itself.

Answer:

B. organ