Questions

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?

Improve the bracketed part of the sentence.

The footballers (has been) arguing with the coach since morning.

Rearrange the parts of the sentence in correct order

Further negotiations

P-are necessary
Q-to reach a common understanding
R-to enable implementation

Rearrange the parts of the sentence in correct order.

The reference

P - ­is simultaneously a matter
Q - ­to the size of a vulnerable community
R­ - of legal as well as political and ethical perspective

Improve the bracketed part of the sentence.

Let us hurry, or else the bus (will be leaving) the stop by the time we reach there.

Rearrange the parts of the sentence in correct order.

We should learn our lesson
P-from this history and stay away
Q-of our neighbours
R-from interfering in the messy domestic politics

Improve the bracketed part of the sentence.

The student (chose) to represent the school was the epitome of dedication and excellence.

Improve the bracketed part of the sentence.

Keshav was (endowed on) rare talents.