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.
Lesson Summary. The stamen is a very important part of the flower because it contains the male reproductive organs. The stamen is comprised of the filament, which is the long, slender stalk, and the anther, which is at the top of the filament and is where pollen grains are produced.esson Summary. The stamen is a very important part of the flower because it contains the male reproductive organs. The stamen is comprised of the filament, which is the long, slender stalk, and the anther, which is at the top of the filament and is where pollen grains are produced.