Pioneering wet lab experiments have already established the role of mitochondria as a power house inside the cell. Apart from that this organelle has important role in several other cellular processes like calcium signalling, apoptosis, embryonic and tissue development, lipid synthesis, aging etc. Here in the present study the focal theme has set on the role of this organelle towards development and aging process. Research studies have already conferred the role of mitochondrial fusion and fission process in several cellular processes. Here the work is focused to unveil the role of this organelle towards development and aging process in the context of fission and fusion which happens inside this organelle. © 2015, Global Research Online. All rights reserved.