Plant Anatomy: Microsporangia and Stamen Structure

They extend longitudinally all through the length of an anther and are packed Figure with pollen grains.

The microsporangia develop fur______r and Filament (stalk) become pollen sacs.

In a transverse section, a typical ______ appears near circular in outline.It is generally surrounded by four wall layers (Figure 2.3 bj-the epidermis, endothectum, middle layers and the tapetum.

The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen.The innermost wall layer is the tapetum.

Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.Can you think of how ______ cells could become bi-nucleate?

As the anther develops, the cells of the sporogenous tissue undergo meiotic divisions to form microsporetetrads.What would be the ploidy of the cells of the tetrad?