Question

which level of organization is seen in both anacharis ehr... and the human stomach? photo by gordon t. taylor, courtesy of the noaa options: cell, tissue, organ, organ system

Explanation:

To determine the level of organization common to Anabaena (a cyanobacterium, a type of prokaryote) and the human stomach, we analyze each option:

• Cell: Anabaena is a single - celled organism (prokaryotic cell), and the human stomach is an organ composed of many cells. So the cell level is present in both (the individual Anabaena cell and the cells that make up the stomach).
• Tissue: Anabaena is unicellular and does not have tissues (tissues are groups of specialized cells in multicellular organisms), while the stomach has tissue layers. So tissue is not common.
• Organ: Anabaena is a single cell and not an organ, while the stomach is an organ. So organ is not common.
• Organ System: Anabaena is unicellular and has no organ systems, while the stomach is part of the digestive organ system. So organ system is not common.

Answer:

The correct option is the one corresponding to "Cell" (the option with "Cell" as the label, e.g., if the options are labeled A - D and "Cell" is option A, then "A. Cell").