Ralph McNeilage, Botany & Mycology 2009 Poster Session Interviews

[1091Floyd21]

At what point does the microspore become known as the pollen grain? Is it as soon as the microspore mother cell has divided by meosis to produce the microspores, that they are considered pollen grains OR is it when division by mitosis occurs producing the generitive & tube cells enclosed by a thick, that it is considered to be a pollen grain.