Secondary growth can be defined as a phenomenon where, after the completion of primary tissue formation, more secondary tissues are developed to supplement dermal, vascular and mechanical tissue system in certain plants. The meristem of primary tissue divides. The daughter cells, after differentiation and maturation, form primary tissues of plant body. Primary tissues include epidermis, cortex, primary phloem, primary xylem [...]
In this article we will discuss about the functions of storage organs of beta vulgaris, explained with the help of suitable diagrams. Biennials, besides seeds, have fleshy and swollen root or stem that store nutrients. The biennial herbs store nutrients in the first year. This is for the development of the flowering shoot in the following year. Many important food [...]
The following points highlight the two main forms of combial cells in plants. The forms are: 1. Storied or Stratified Cambium 2. Non-Storied or Non-Stratified Cambium. Form # 1. Storied or Stratified Cambium (Fig. 23.1B): In TLS the initials are arranged in horizontal regular file having a stratified structure. The initials are usually short and all of about the same [...]