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 is the male part of a flower â the reproductive organ that produces the sticky powder known as pollen. The stamen is made up of a filament that holds the anther. The filament is a thin stalk. An anther sits on the tip of each filament and contains the pollen, which is the plantâs male reproductive cell. Pollen fertilizes the ovules or female reproductive cells of the plant. Fertilization results in the formation of seeds. Pistil