Assume that a pencil box held in your hand represents a plant cell. In how many possible planes can it be cut? Indicate these cuts with the help of line drawings.
Ans. It can be cut vertically, horizontally and diagonally. If a plant cell is cut in two equal halves, it can be cut in bilateral symmetry. If a plant is cut in different planes, it will result in radial symmetry. Therefore, it can be cut either in a single plane or different plane.