Angiosperms are flowering plants. the carpal is a reproductive organ within the flower. what part of the carpal becomes the fruit when fertilization occurs?

In the ovule. When the 'pollen', which are the sperm of a flower, reach the stigma, the 'pollen' will roll down through the style to the ovary.  

The flowers ovary becomes the fruit and the ovules become the seeds

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.