What is the main feature of a customary marriage? Answer in one line.

Define (a) Endogamy (b) Exogamy and (c) Hypergamy. Answer in ten lines.

What are the three forms of marriage found in India? Use two lines for your answer. 

What are the two major types of the transfer of material wealth that accompany marriage? Answer in four lines.

What is the legally prescribed age at marriage for boys and girls? Use one line for your answer.