Question

what is the main function of the mitochondria in a plant cell?
to break down sugar and release energy that the cell can use
to control which substances enter and leave the cell
to direct cell activities by sending instructions to different parts of the cell
to use energy from sunlight to make sugar

Explanation:

Mitochondria are the power - houses of the cell. Through cellular respiration, they break down glucose to produce ATP, the energy - currency of the cell. The other options describe functions of the cell membrane (controlling substances), the nucleus (directing cell activities), and chloroplasts (using sunlight to make sugar).

Answer:

to break down sugar and release energy that the cell can use