Formation of Theca in Dithecous Anther
As the flower develops, certain cells transform into new sections, such as anthers. Special cells generate small structures known as microspores (microsporogenesis) within each region of the anther. This occurs through a process known as meiosis, in which each unique cell divides into four smaller ones. These microscopic cells develop into pollen grains. Each pollen grain contains small components that aid in the formation of sperm cells. As the anther expands, specific cells within it transform into distinctive shapes known as thecae. In anthers with two thecae, each component has its own sac for pollen grain growth.
The pollen component of a flower, known as the anther, is normally divided into two chamber-like pieces. Each segment contains two smaller pieces known as pollen sacs. These sacs are where the pollen grains develop. If the pollen sacs are not close together, the formation of chambers is disrupted, resulting in the absence of pollen sacs and chambers. Sometimes there is a gap down the middle that separates the two portions of the anther.
Dithecous Anther – Structure, Formation, and Theca
The dithecous anther is a bilobed structure found in flowering plants’ stamens. The dithecous anther consists of four microsporangia, two in each lobe. Upon maturation, the anther undergoes dehiscence, releasing pollen for pollination and fertilization. Dithecous anthers examples include solanum and mustard.
The dithecous anther plays a crucial role in the sexual reproduction and genetic diversity of angiosperms. In this article, we will learn about the structure, function, and formation of the dithecous anther in detail.
Table of Content
- What is Dithecous Anther?
- Dithecous Anther Diagram
- Structure of Dithecous Anther
- A Transverse Cross-Section of Dithecous Anther
- Formation of Theca in Dithecous Anther
- Functions of a Dithecous Anther