If we consider only wooden ships, then all of the things on the list are composed of large carbon frameworks called polymers. Since 1872 chemists have identified the common polymers produced by plants and animals, primarily proteins (collagen, keratin) and carbohydrates (cellulose, starch).
stamen. One of the male organs of a flower, consisting typically of a stalk (filament) and a pollen-bearing portion (anther).The male reproductive organ of a flower.The male organ of angiosperm flowers where pollen grains are produced in the anther component of the stamen.These pollen grains are produced by meiosis and provide the building blocks required for reproduction of an angiosperm species.he male reproductive organ of a flower.The male organ of angiosperm flowers where pollen grains are produced in the anther component of the stamen.
The stamen (plural stamina or stamens) is the pollen-producing reproductive organ of a flower.orphology and terminology [edit]. A stamen typically consists of a stalk called the filament and an anther which contains microsporangia. Most commonly anthers are two-lobed and are attached to the filament either at the base or in the middle portion.