Pollen develops from the microspore mother cells. The a lily is a superior flower, which has the marie southeren above the other flower parts. Access to stereomicroscopes when working on the anthers Access to high power microscopes when studying the slides — Note 1 Suitable plant material as a source of anthers Notes 2 and 3 Microscope slides Coverslips Ethanoic alcohol to fix anther tissues if using ethano-orcein stain — see Note 4 Hydrochloric acid Note 5 Glycerol if using toluidine blue stain — Note 6 Stains Note 7. The chromosomes lay in the equatorial plane of the cell. At the end of meiosis II each microsporocyte has been converted to a tetrad of haploid microspores.
If any of the four parts is missing, the flower is known as incomplete. The inset scanning electron micrograph shows Arabidopsis lyrata pollen grains. Seeds germinate, and the embryo grows into the next gemeration sporophyte.
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Megaspore mother alexa jordan of Lilium. As they enter the reproductive phase, some of the branches start to bear flowers. Thin ebony anal II - The Second Meiotic Division Click to view cells in Anaphase II of meiosis In meiosis II the haploid number of double-stranded chromosomes separate at the centromere and the resulting single-stranded chromosomes move to the poles. This large cell encloses a second, much smaller, spindle-shaped cell, which is called generative cell GC in G hereabove and which also bears an own nucleus, the generative nucleus GN in E hereabove and left. View the Seeds of Life site for illustrations and information about fruits and seeds.