Which is the highest level of organization?

Which is the highest level of organization?

• A. Chemical
• B. Organism
• C. Tissue
• D. Cellular

Answer: (B)

Biological organization builds from simple parts into a complex living whole. The options here span different scales: chemical level involves atoms and molecules, cellular level is the inside of a single cell, and tissue level is a group of similar cells working together. The organism level, however, integrates all those parts and systems into one complete living being. That integration makes it the highest level among the choices, since it represents the entire individual with all its organs and processes functioning together. There are even broader levels beyond an individual, like populations or ecosystems, but those aren’t part of these options.

Biological organization builds from simple parts into a complex living whole. The options here span different scales: chemical level involves atoms and molecules, cellular level is the inside of a single cell, and tissue level is a group of similar cells working together. The organism level, however, integrates all those parts and systems into one complete living being. That integration makes it the highest level among the choices, since it represents the entire individual with all its organs and processes functioning together. There are even broader levels beyond an individual, like populations or ecosystems, but those aren’t part of these options.