Pollen as large as about 90–100 µm. In angiosperms, during flower development the anther is composed of a mass of cells that appear undifferentiated, except for a partially differentiated dermis. As the flower develops, four groups of sporogenous cells form within the anther. The fertile sporogenous cells are surrounded by layers of sterile cells that grow into the wall of the pollen sac. Some of the cells grow into nutritive cells that supply nutrition for the microspores that form by meiotic division from the sporogenous cells. In a process called microsporogenesis, four haploid microspores are produced from each diploid sporogenous cell
The Poppy Is Also a Flower The film is based on an idea by Ian Fleming, the James Bond creator. Funded in part by a grant from Xerox, it was produced by the United Nations and the stars received a salary of $1. Terence Young left the direction of "Thunderball" to make the film. "The Poppy Is Also a Flower" was the last of four television movies commissioned by the United Nations, to publicise its missions and roles in world peace and diplomacy. The film was originally 80 minutes in length for its ABC telecast, minus commercial time for the 90-minute slot. It was expanded to