Define marriage. Discuss marriage as a social institution and the changing dynamics in the present.
Marriage is a socially approved relationship between man and woman that binds each other into a permanent, official relation of husband and wife. It is an important social institution that satisfies physical, social, psychological, cultural and economic needs of men and women. According to the ancient scripture marriage is regarded as a socio-religious duty constituted to attain three important aims of life the dharma (duty), rati (sensual pleasure) and praja (progeny).
Various forms of marriages are based on number of wives or husbands a person has. Two broad categories are monogamy {one spouse} and polygamy {more than one spouse}. The below graphic shows this broad classification:
Polygyny
In Polygyny one man marries more than one woman at a given time. It is most popular form of polygamy and is common in Muslims now-a-days but it used to be common in Hindus also once upon a time. Polygyny has two forms viz. Sororal Polygyny {when man marries more than one ladies who are also sisters of each other} and non-sororal Polygyny {when man marries more than one ladies who are not sisters of each other}.
Polyandry