Flushing History. Household toilets made between 1980 and 1992 flushed the bowl utilizing the gravitational force of 2.5 to 3.6 gallons of water, which meant that the average homeowner used as much as 18.8 gallons of water daily.
Lesson Summary. A monocot is a type of flowering plant that is characterized by having a single cotyledon, trimerous flowers, and parallel leaf veins. Monocots are economically important as food sources for both humans and animals, and they grow in a variety of habitats, including the tropics.esson Summary. A monocot is a type of flowering plant that is characterized by having a single cotyledon, trimerous flowers, and parallel leaf veins. Monocots are economically important as food sources for both humans and animals, and they grow in a variety of habitats, including the tropics.
Monocots include all grasses and glasslike plants, plus lilies, irises, amaryllises, and some other plant types. Usually, but not always, monocots possess parallel-veined leaves, as typified in the simple blade of fescue grass shown at the right. One example of a monocot which does not have parallel-veined leaves is the Trillium, several species of which are common in moist American forests.