India adopted this system because for elections to lok sabha and state legislative assembly India has adopted the FPTP system

The reasons for success of FPTP include :

1 Simplicity and Accountability: The PR system of elections is quite complicated. It can work in small countries but it is unsuitable for a sub- continental country like india. For common voters ,the FPTP system is easy to understand and operate. Voters have to simply choose a candidate or a party while voting. Voters may give importance to either the party or thr candidate or strike a balance between both. In the PR system, voters vote for parties and representatives are chosen as on the basis of party list. As a result no one is real representative. In FPTP , the voters know and can approach the representative of their constituency and can also hold them accountable.

2 . Stable Government: The framers of indian constitution felt that PR system may not provide stable Government in the legislature and PR system may not produce clear majority since seats are alloted in legislature on the basis of vote share. The FPTP system allows largest party or coalition to form a government with a majority, more than PR system of sharung votes may give. The FPTP system therefore provides stability to parliamentary government .

3 . Wide representation: FPTP system encourages representatives of different communities to win election in a locality. The PR system would lead each community to form a nationwide party in India since the nation is full of diverse groups.

1. The lengthiest Constitution in the world : The Indian Constitution is the lengthiest and the most detailed of all the written Constitutions of the world containing 449 articles in 25 parts, 12 schedules, 5 appendices and 101 Amendments.

2. Parliamentary form of Government :The constitution of India establishes a parliamentary form of a government both at the Centre and the State. The essence of the parliamentary government is its responsibility to the Legislature. The president is the constitutional head of the State but the real executive power is vested in the council of ministers whose head is the Prime Minister.

3. Unique blend of rigidity and flexibility: It has been the nature of the amending process itself in federations which had led political scientists to classify federal Constitution as rigid.

4. Fundamental Rights : The incorporation of a formal declaration of Fundamental Rights in part III of the Constitution is deemed to be a distinguishing feature of a democratic 
State. These rights are prohibitions against the State. The State cannot make a law which takes away or abridges any of the rights of the citizens guaranteed in part III of Constitution.

5. Directive Principles of State policy (DPSP) :The Directive Principles of State Policy contained in Part IV of the Constitution, it set out the aims and objectives to be taken up by the States in the governance of the country.

In Hinduism, untouchability is a condition in which the people belonging to lower classes are ostracised and it is considered that the untouchables are born only to do menial tasks. They are segregated from the mainstream by social and religious customs.

Following are the main differences between Fundamental Rights and Directive Principles:

1. Fundamental Rights are Justiciable, while Directive Principles are not Justiciable.
2. Fundamental Rights are mandatory, while Directive Principles are optional. It is mandatory for the government to enforce Fundamental Rights but Directive Principles are just optional.
3. Fundamental Rights are negative to prohibit the government from doing certain things. But Directive Principles are affirmative instructions to the government to do certain things.
4. Fundamental Rights are concerned with the individual, whereas Directive Principles concern the entire society in which the individual is but a component.
5. The aim of Fundamental Rights is Political democracy, but that of Directive Principles is Economic democracy.

A bill of rights is a list of the most important rights to the citizens of a country.

National Human Rights Commission of India

The Constitution of India guarantees six Fundamental Rights as follows:
(i) Right to Equality
(ii) Right to Freedom 
(iii) Right against Exploitation
(iv) Right to Freedom of Religion
(v) Cultural and Educational Rights
(vi) Right to Constitutional Remedies

The Right to Constitutional Remedy is important because it is not only a right but a remedy. If a person's fundamental rights have been denied to him, he can move to the Supreme Court for the enforcement of his rights. Dr. Ambedkar thus called the Right to Constitutional Remedy as the  "heart and soul ofthe Constitution".

A. Rights in themselves are very necessary for the very sustenance of a democracy. Without rights, democracy will become meaningless and ineffective.
B. For democratic elections to take place, it is necessary that citizens should have the right to express their opinions, form political parties and take part in political activities.
C. Rights protect minorities from the oppression of majority. They ensure that the majority cannot do whatever it wishes. Rights are guarantees which can be used when things go wrong. Things may go wrong when some citizens may wish to take away the rights of others. This usually happens when those in majority want to dominate those in minority. 
D. The government is expected to protect citizen’s rights. But sometimes elected government may not protect or may even attack its own citizens. So, some rights need to be placed higher than the government so that it cannot violate them.
E. In most democracies, the basic rights of the citizens are written down in the Constitution.