Answer:
two (a pair)
Explanation:
Centrioles are the pair of hollow cylinders that are located near the nucleus in the cytoplasm in a non-dividing cell. Two centrioles together make a centrosome. Centriole duplication occurs before cell division as the duplicated centrioles take part in the formation of the spindle apparatus. However, cytokinesis distributes one pair of centrioles to each daughter cell. Therefore, after cytokinesis, two centrioles are present in each daughter cell.
Because ounce and inch system are too big thus less sensitive.
Using metric systems like milliliter and millimeter might be better since you can find smaller differences. If you are using a system that less sensitive you can observe small differences and might need to grow the trees bigger than it should.
Yes it would because of the hydrogen peroxide and the chemicals it has