How many theca are present in a typical angiosperm anther?

Four

In a typical angiosperm anther, there are usually four theca present. The anther is bilobed, with each lobe having two theca, making it dithecous.

Each theca is a pollen sac that contains the pollen grains. So, in total, there are four microsporangia or pollen sacs located in a typical angiosperm anther, with two microsporangia in each lobe.

This arrangement allows for the production and release of a large number of pollen grains, which are essential for successful pollination and fertilization in flowering plants.