Cells, tissues, organs, systems and organisms 1. Complete the table below by explaining what the terms mean in your own words: Levels of organisation within an organism Cell Tissues Organs System Organism (5) 2. Refer to the diagram below and write a short description of the relationship between cells, tissues, organs, system and organisms – you can use an example of a system to help in your description. (5) From: http://peer.tamu.edu/curriculum_modules/Cell_Biology/Module_1/index.htm