Introduction

A typical angiosperms plant is sporophytic (2n) and has two well-developed systems, an underground root system and above ground shoot system. The former consists of roots and their branches while the latter comprises the stem, branches, leaves, buds, flowers, and fruits. Out of these plant parts, the root and stem are called plant organs, as they have their embryonic initials, radicle, and plumule, respectively. Roots, stems, and leaves are called vegetative parts as they take part in the nutrition, growth, and maintenance of the plant body. The flower is considered a reproductive part because it is a highly condensed and modified shoot meant for sexual reproduction. Fruit and seeds are reproductive products as they are produced after the completion of sexual reproduction.