For the production of 12 polygonum types of embrayosac, how many reductions divisions are required in megasporocyte?

Polygonum-type embryo sac is also known as monosporic embryo sac. They are called so because of the number of megaspores (which is one in monosporic) involved. In such cases, meiosis of the diploid megaspore mother cell in the nucellus produces four haploid megaspores. Three of them subsequently undergo programmed cell death, leaving only one functional megaspore. So, single meiosis results in the formation of only one embryo sac. So, 12 meiosis (reduction division) will be required for the formation of 12 embryo sacs. So, the correct option is '12'.