Shop Smart: Comparing Colorado Meat Prices and 5 Ways to Save Money on Meat. A typical American household spends on average of $900 per year on meat, and meat is the largest expenditure of the consumer food budget, representing 23% of the total $3,971 spent on food at home, according to the Bureau of Labor Statistics.
Spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes.Two gametes fuse to form a zygote which develops into a new sporophyte.he spores of seed plants, however, are produced internally and the megaspores, formed within the ovules and the microspores are involved in the formation of more complex structures that form the dispersal units, the seeds and pollen grains.
Fern leaves grow from a rhizome. Fern leaves are fan-shaped and also play an important role in reproduction. The production of spores occurs in structures called sporangia. These structures are found on the surface of the fronds, usually on the underside of the leaf. When the sporangia or spore casings dry out, the dispersal of spores occurs into the atmosphere. Certain fern species date back nearly 400 million years. There are about 12,000 fern species.