number of male gametes formed by 16 microspore mother cell​

Dear Student,

One microspore mother cell gives rise to four pollen grains. And pollen grain undergoes two mitotic division and form 2 male gametes. 

Hence ,

1 MMC = 4 pollen grains    [Since, 1 pollen grain=2 gamete ]

Hence, 4*2 = 8 male gametes.

16 MMC= 16*4= 64 pollen grains 

Hence, Total male gametes= 64*2= 128 gametes. 

Regards.