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 Poppy Is Also a Flower The Poppy Is Also a Flower is a 1966 ABC made-for-television spy and anti-drug film. It was originally made under the auspices of the United Nations as part of a series of television specials designed to promote the organization's work. The film was directed by Terence Young and stars Yul Brynner, Omar Sharif, Eli Wallach, Angie Dickinson, Senta Berger, Stephen Boyd, Trevor Howard, Rita Hayworth and Marcello Mastroianni. Grace Kelly (as Princess Grace of Monaco) narrates. The film was also known by alternate titles Poppies Are Also Flowers, The Opium Connection, and Danger Grows