Q1. If in a multicellular organism, specific works are given to specific organs like our digestive system's work is to only digest the food and not to respire similarly work of respiratory organs is to only respire and not to digest the food, then why we get diseases like that of the indigestion when only a specific work is given to the organ?. Does our organs are incapable to do a single pice of work?.



Indigestion is caused by excessive HCL present in our stomach which leads  burning of the stomach tissue .The main fault is of the organism because it does'nt feeds on anything or eats excessive that leads to excessive secretion of hcl which is harmfull to us.

Real life example - If a specific work is given to you can you do it 100% perfect ? To err is human