Describe the internal structure of an anther by mentioning the parts of a typical stamen.

(N/A) typical stamen consists of two main parts: the long and slender stalk called the filament,and the terminal,generally bilobed structure called the anther.
The proximal end of the filament is attached to the thalamus or the petal of the flower.
The number and length of stamens are variable in flowers of different species.
$A$ typical angiosperm anther is bilobed,with each lobe having two theca,making it dithecous.
Often,a longitudinal groove runs lengthwise,separating the theca.
The anther consists of four microsporangia located at the corners.
These microsporangia develop further and become pollen sacs,which are packed with pollen grains.