KCET 2016 Biology Solved Paper

1 micro spore mother cell produces 4 pollen grains. If one pollen sac contains 1000 micro spore mother cells, then pollens produced are 4000.
In a dioecious anther, there are 4 pollen sacs so in total the number of pollen grains produced in 4 pollen sacs is 4 × 4000 = 16000 pollen grains.