a horse and a mango tree both are complex living organisms with specialie yet different tissue system to perform the basic life process. Give two reasons for possessing different tissues to perform similar function.

The tissues are completely different between mango tree and horse. Horse is made up of different types of animal tissue and mango is made up of plant tissue. The tissues are completely different but function is similar. In horse, exchange of gases occurs in lungs but in mango tree gaseous exchange occurs in stomata.
In horse transportation of blood, nutrients etc occurs via heart similarly transportation of food, water occurs via xylem and phloem in mango tree.