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.

I couldn't help but (had to cry) at his sad story.

Improve the bracketed part of the sentence.

One minute they're all sweet (but) caring and the next minute they stab you in the back.

Select the related word/letters/number from the given alternatives.

? : GA : : QR : JI

Improve the bracketed part of the sentence.

With a population of over one billion, India is the second (most popular countries) in the world.

Which subatomic particle has a positive charge?

The first-ever National Road Safety Month was observed in which year, in India?

Improve the bracketed part of the sentence.

A new chapter (may been put forth) that India gained Independence only in the last one year and not in 1947.