DENDROLOGY

Detailed explanation-1: -For example, epithelial tissue, connective tissue, etc. Tissues come together to form organs. For example, lungs, trachea, etc. Several organs in the body come together to perform a common body function and it is known as organ system.

Detailed explanation-2: -The group of organs that work together to perform a specific function is called an organ system. There are many different organ systems in the body, such as the circulatory, respiratory, and digestive systems. Each system has organs and structures that all work as a unit for the same purpose for the body.

Detailed explanation-3: -A group of cells working together is called a tissue and a collection of tissues all performing a specific function is called an organ. Multiple organs which are connected together are referred to as an organ system. Examples of organs include the heart, the lungs, the liver, kidneys, the intestines and the stomach.