Pollen sacs develop from
Option 1 : Microspore
Option 2 : Microspore mother cell
Option 3 : Microsporangium
Option 4 : Megaspore
Pollen sacs develop from
Option 1 : Microspore
Option 2 : Microspore mother cell
Option 3 : Microsporangium
Option 4 : Megaspore