Question

The anther breaks at the region of​

Answer 1

Answer:-

The anther breaks at the region of Stomium.

About Stomium:

$\longmapsto$ An area of thin-walled cells in a sporangium or pollen sac that breaks to release the spores or pollen grains when the surrounding tissue dries.

$\longmapsto$ The opening in an anther usually between lip cells through which dehiscence occurs.

$\longmapsto$  Stomium is the site through which pollen grains are released when the anther dehisce. It occurs in the groove of each anther lobe.

$\longmapsto$ The stomium is found under the annulus in ferns and between the pairs of pollen sacs in seed plants.