A dithecous anther consists of

Explanation

A typical angiosperm anther is bilobed with each lobe having two theca, i.e., they are dithecous.

A typical stamen (male reproductive organ) has the long and slender stalk called the filament, and the terminal generally bilobed structure called the anther.

The bilobed nature of an anther is very distinct in the transverse section of the anther. The anther is a four-sided (tetragonal) structure consisting of four microsporangia located at the corners, two in each lobe.

In this sense, the anther has 4 microsporangia in two lobes, i.e., in each lobe, it has two microsporangia.

Final Answer

Hence, the correct answer is option A: (i) - Four, (ii) - Two.