A pollen grain is a spherical structure, 25-50 micrometers in size, with cytoplasm surrounded by a plasma membrane.
Un grano de polen es una estructura esférica de 25-50 micrómetros con citoplasma rodeado por una membrana plasmática.
Front | pollen grain |
---|---|
Back | spherical and 25-50 pico meter and cytoplasm surrounded by the plasma membrane |
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