One Word

Which one of the following is the correct meaning of - The study of human behaviour and societies:

Which one of the following is the correct meaning of - Killing of self.

Which one of the following is the correct meaning of - That which cannot be heard.

Choose the correct alternative which can be substituted for the given word/ sentence : Murder of a king

Choose the correct one word substitution from the given options : The study of plants

Something kept as a reminder of an event :

Government run by people is called :

Choose the appropriate one word substitution. One who copies from other writers.

Murder of one's child is .............

Replace the underlined part of the following sentence with one word from the options given below: He is a child without parents .