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