Having a hard time with this one. Fill in the blanks with the following: adult sporophyte, sporophyte phase, gametophyte phase, male gametophyte, female gametophyte, microspore, microspore mother cell, megaspore, megaspore mother cell, sperm, egg, meiosis, fertilization, zygote, embryo, haploid, diploid, stamen, anther, ovary, ovule, pistil, and flower. Circle the structure that is the pollen grain. Circle the structure(s) that make up the seed. Put a line on the diagram to represent where dormancy occurs. Circle the structure(s) that makes up a pollen grain. Where does pollination occur?.