Respuesta :

A group of similar (accoding to function) types of cells, when comes together to perform a specific function, then it forms a tissues.
When a group of similarly working tissues come together then they form an organ.


And this relation could be written as

cell > tissue > organ

So, organ is a collection of tissues and tissues are collection of cells.
nay102
Living tissue is made up of cells. There are many different types of cells, but all have the same basic structure. Tissues are layers of similar cells that perform a specific function. The different kinds of tissues group together to form organs.