Question

Which of the following represents the correct order?

• A. Apoptosis
• B. Cells --> Tissue --> Organs --> Organ systems
• C. Organ systems --> Cells --> Tissue --> Organs
• D. Tissue --> Cells --> Organ systems --> Organs

Answer 1

The correct option is B

Cells --> Tissue --> Organs --> Organ systems

In unicellular organisms, one cell performs all the functions. In multicellular organisms, cells combine to make tissues. Organs are collections of tissues grouped together performing a common function. An organ system consists of functionally related organs. Humans have many organ systems. For instance, the circulatory system transports blood through the body and to and from the lungs; it includes organs such as the heart and blood vessels.