Which of the following levels is higher than organs in the organizational hierarchy?

In the organizational hierarchy of biological structures, the level that is higher than organs is the organ systems level. Organ systems are composed of groups of organs that work together to perform complex functions necessary for the survival and maintenance of the organism. For example, the digestive system includes various organs such as the stomach, intestines, liver, and pancreas, all of which collaborate to digest food and absorb nutrients.

Tissues consist of groups of similar cells that perform a specific function, but they do not encompass all the different functions that a collection of organs can provide in an organ system. Molecules and cells are further down the hierarchy; molecules are made of atoms and form parts of cells, while cells are the basic building blocks of tissues. Therefore, while tissues, molecules, and cells are essential components of biological organization, they do not surpass the level of organs, making organ systems the correct answer in this context.