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.
Some examples of monocot seeds are maize, rice, wheat, coconut, grasses, etc. Dicot seeds contain two cotyledon, which are thick and fleshy. The cotyledon is responsible for the absorption of nutrients from the endosperm before the germination of the seed. Some common examples of dicot seeds are pea, bean, peanut, apple, etc. Each dicot seed has a unique seed coat, which provides a distinctive appearance. Testa is the outer layer of seed coat, which protects the seed from damage and prevents it from drying out. Tegmen is the thin layer lying next to testa.