What is organ? Md. Saifur Rahman Organs are the special parts of animals composed of one or several kinds of tissue and are capable of performing particular functions. You may likeDo I need car insurance?What is car insurance?How could I get cheaper car insurance?What is auto insurance?Why Adulterant food is the barrier to sound health?What are the producers?What are food preservatives?What is food chain?What is tertiary consumer?What do you mean by hierarchy?