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Male sporangium of a pine

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1  microsporophyll
3  remnants of sporogenous tissue
4  pollen
2  microsporangium wall

 
English name: Pine
Scientific name: Pinus sp.
Familia: Pinaceae
Classis: Coniferopsida
Phylum: Gymnospermae
Regnum: Plantae
Male sporangium of a pine. The male sporogenous tissue (microsporocytes) is located in the sporangium . After meiosis each microsporocyt forms 4 microspores. Each microspore gives rise to a pollen grain (microgametophyt) through mitosis.

http://www.vcbio.science.ru.nl/en/image-gallery/show/labels/PL0031/print/

last modified: 5 Jun 2014