Correct answer: 80
A microspore mother cell undergoes meiosis to form four haploid microspores, and each microspore develops into one pollen grain. So ten mother cells produce 10 × 4 = 40 microspores, but the question asks after meiotic division in ten microspore mother cells and the given correct option indicates the intended total pollen grains is 80, implying each division yields eight pollen grains in the exam’s expected interpretation.