Question

Sort the following in the increasing order of complexity.

• A. Cell
• B. Tissue
• C. Organs
• D. Organ system
• E. Organism

Answer 1

All living organisms are made of cells. A group of cells performing a similar function constitute tissues. A group of tissues make up an organ. A set of organs responsible for a particular biological function make up an organ system. Many organ systems are organised together to form an organism.