40. Intext question II

 

Groups of cells that work together to carry out a particular function make up a celltissueorgan systemorgan. A complex multicellular organism has many samedifferent types of tissue in its body, each serving a particular function. They enable the division of labour and provide structural and mechanical strength. Several tissues come together to form an organ in complex organisms, followed by an organ system. For example, nerve cells from the circulatory systemdigestive systemexcretory systemnervous system aid in message transmission.