A flower is the reproductive part of flowering plants ... A pollen tube grows through the style of the flower until it reaches an ovule inside the ovary. The nucleus of the pollen grain (the ...

1. The axis of the flower must have developed long before the emergence of the inflorescence from the outer spathe, and develops the ovules after it has escaped from the spathe. The development of the ...

The tab1 mutant, in which the function of the TAB1 gene is lost, does not form an ovule. News organizations may use or redistribute this image, with proper attribution, as part of news coverage of ...