Question

how mnay gemeration of mitotic division must occur in a cell root tip to form 256 cells?​

Answer 1

Every mitotic division will lead to the formation of twice the number of mother cells, hence to form 256 cells from a root tip cell, 8 generations of mitotic divisions must occur (2

8

=256 cells).

Answer 2

8 generations
8 generations of mitosis are required to produce 256 cells from one cell. In every generation each daughter cell also undergoes mitotic division. So total 255 mitotic divisions are required.