Question

Which among the following is correctly represented?

• A. Cell $\to$ tissue $\to$ organ $\to$ organ system $\to$ organism
• B. Organism $\to$ organ $\to$ organ system $\to$ tissue $\to$ cell
• C. Cell $\to$ tissue $\to$ organ system $\to$ organism $\to$ organ
• D. None of the above

Answer 1

The correct option is A Cell $\to$ tissue $\to$ organ $\to$ organ system $\to$ organism

Cells are called the structural and functional unit of life because all the living organisms are made up of cells and also all the functions taking place inside the body of organisms are performed by cells. A group of cells, which are structurally similar and or work together to perform a particular function are called tissue. The collection of such tissues, which are joined in a structural unit to perform a certain function is called an organ. An organ system is a group of organs that work together to perform one or more functions, e.g., heart, blood, and blood vessels work together as a circulatory system. Organ systems work together and carry out normal functions of life, which form an organism. Thus, the correct answer is option A.