Read the passage carefully and choose the best answer to each question out of the four alternatives.

Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa.

Two centuries ago, the black rhinoceros – which roamed much of sub Saharan Africa – had 64 different genetic lineages; but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.

From the second half of the 20th century what has caused a dramatic fall in black rhinoceros population?

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

You (will being surprised) to learn that some leading philosophers have supported immoral views.

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

A person or thing that is a perfect example of a particular quality or type

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

The smoke rises and

A-chokes my apartment

B-gets trapped in the

C-tree-tops and

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

I (had been) a unique case of slow learning.

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

Relating to or involved in crime

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Under the weather

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

People are now either exposed to the very best of their inner circle and the world, ________ to the worst — articles that look to shock, to provoke rage and put a lens on everything that is wrong _________ the world. Imperceptibly, it goes unsaid that often __________ pieces of ‘news’ fail to actually provide a constructive solution. The effect of such a disparity _________ to the same effect as news of TV and newspapers — a feeling that what we see does not ____________ our lives.

we see does not ____________ our lives.