Onions are flowering plants that use insect pollination to produce viable seeds. Different types of bees are the main pollinators of onions. Commercial production of onions usually harvests before flowering, however, and instead exclusively uses daughter bulbs to reproduce cultivated onions.Continue Reading
Onions are bulbs of the Allium genus, which they share with garlic, leeks and chives. Scallions, meanwhile, are actually members of the onion species at different stages of development. Shallots are also members of the same species, but are a different variety.
The bulbs of onions are actually modified leaves wrapped around each other. The outer leaves dry out, creating a tough protection for the moist, living leaves beneath. The green leaves that photosynthesize spring from buds in the center of the bulb. The stem is just a flat disc of tissue at the bottom of the bulb from which the roots branch out.
Onions are the most widely used in their group, with garlic at a distant second place at about 10 percent of the production of onions. The white, yellow and red varieties of onion are just different varieties of the same species. Because of their method of cultivation, the vast majority of onions of any one variety grown today are genetically identical — clones.Learn more about Fruits & Veggies
Cut onions release amino acid sulfoxides, which the eyes perceive as an irritant. The eyes react by flushing the irritant out using reflex tears, a type of tear designed for this purpose.Full Answer >
The root vegetables include carrots, potatoes, turnips, rutabagas and onions. Other root vegetables are sweet potatoes, garlic, beets, onions and cassavas. Some of these vegetables are true roots, while others are tubers, bulbs or modified stems.Full Answer >
Common root vegetables include carrots, beets, onions, turnips and yams. Ginger and garlic are root vegetables often used as food spices. Root vegetables grow underground, but their leaves are usually visible above ground. Root vegetables grow better in loose soil that allows roots to grow downward without obstacles such as rocks.Full Answer >
Sweet onions are a kind of onion with a less astringent taste. They are commonly eaten raw, such as in salads or sandwiches. Some popular varieties are walla walla and Vidalia.Full Answer >