Egg sizes are Jumbo, Extra Large, Large, Medium, Small and Peewee. Medium, Large and Extra Large are the sizes most commonly available because hens most often lay eggs of these sizes. Sizes are classified according to minimum net weight expressed in ounces per dozen.
All plants, fungi, and many other lineages form sporangia at some point in their life cycle. Sporangia can produce spores by mitosis, but in nearly all land plants and many fungi, sporangia are the site of meiosis and produce genetically distinct haploid spores. sporangium (pl., sporangia) (modern Latin, from Greek ÏÏÏÏÎ¿Ï (sporos) âsporeâ + Î±Î³Î³ÎµÎ¯Î¿Î½ (angeion) âvesselâ) is an enclosure in which spores are formed.
In contrast, in many seed plants and heterosporous ferns, only a single product of meiosis will become a megaspore (macrospore), with the rest degenerating. In fungi and fungus-like organisms, spores are often classified by the structure in which meiosis and spore production occurs.