Question

what is the main function of the mitochondria in a plant cell? to store waste in the cell to break down sugar and release energy that the cell can use to package proteins and other substances and send them to different parts of the cell to fill the space between the cell membrane and the nucleus

Explanation:

Mitochondria are the power - houses of the cell. Through cellular respiration, they break down glucose (sugar) and convert it into ATP, the energy currency of the cell. Storing waste is a function of vacuoles, packaging proteins is done by the Golgi apparatus, and the cytoplasm fills the space between the cell membrane and the nucleus.

Answer:

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