Chapter 23.2, Problem 1RA

(a)

Summary Introduction

To describe: The cell layer(s) where mutation generates the pattern of green and white seen on most of the plant .

Introduction: The plant embryo has specialized cells known as merismatic tissues that generates root and shoots of the plant directly. The root meristem gives rise to roots and shoots meristem help in increasing the length of the plant and the formation of branches. Leaves present in plants are green in color because of pigment chlorophyll.

(b)

Summary Introduction

To describe: The additional changes in the plane of cell division that might have allowed the branch with all-white leaves to arise.

Introduction: Mersitmatic layers are well maintained because the cell division taking place in any of three layers adds a new cell to that layer. Cells occasionally divide in such a pattern that interrupts their three-layer pattern.