Question

photo by gorden t taylor, courtesy of the noaa
which level of organization is seen in both arachnodiscus ehrenberg and the human stomach?
cell
issue
organ
organ system

Explanation:

• Cell: Arachnoiscus ehrenbergii is a single - celled organism, so it is at the cell level. The human stomach is made up of multiple cells (epithelial cells, muscle cells etc.). But the stomach itself is an organ. However, the common level when considering the basic unit is the cell.
• Tissue: The human stomach has tissues (like epithelial tissue, smooth muscle tissue), but Arachnoiscus ehrenbergii is a single - celled organism and does not have tissues.
• Organ: The human stomach is an organ, but Arachnoiscus ehrenbergii is a single - celled organism and not an organ.
• Organ system: The human stomach is part of the digestive system (an organ system), but Arachnoiscus ehrenbergii is a single - celled organism and not part of an organ system.

Answer:

cell