A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, also called angiosperms). The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs. Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) or allow selfing (fusion of sperm and egg from the same flower). Some flowers produce diaspores without fertilization (parthenocarpy). Flowers contain sporangia and are the site where gametophytes develop. Flowers give rise to fruit and seeds. Many flowers have evolved to be attractive to animals, so as to cause them to be vectors for the transfer of pollen.

In addition to facilitating the reproduction of flowering plants, flowers have long been admired and used by humans to beautify their environment, and also as objects of romance, ritual, religion, medicine and as a source of food.

A stereotypical flower consists of four kinds of structures attached to the tip of a short stalk. Each of these kinds of parts is arranged in a whorl on the receptacle. The four main whorls (starting from the base of the flower or lowest node and working upwards) are as follows:

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Vice is a practice or a behavior or habit considered immoral, depraved, or degrading in the associated society. In more minor usage, vice can refer to a fault, a defect, an infirmity, or merely a bad habit. Synonyms for vice include fault, depravity, sin, iniquity, wickedness, and corruption. The modern English term that best captures its original meaning is the word vicious, which means "full of vice". In this sense, the word vice comes from the Latin word vitium, meaning "failing or defect". Vice is the opposite of virtue.

Depending on the country or jurisdiction, vice crimes may or may not be treated as a separate category in the criminal codes. Even in jurisdictions where vice is not explicitly delineated in the legal code, the term vice is often used in law enforcement and judicial systems as an umbrella for crimes involving activities that are considered inherently immoral, regardless of the legality or objective harm involved.

In the United Kingdom, the term vice is commonly used in law and law enforcement to refer to criminal offenses related to prostitution and pornography. In the United States, the term is also used to refer to crimes related to gambling, alcohol, and drugs.