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?

Which of the following is/are the feature(s) of the Brahmadeya Grants during c 600-1200 AD?

1. Their creation meant a renunciation of actual or potential sources of revenue by the State.

2. These grants could vary from a small plot to several villages.

3. Most grants were made in unsettled areas.

Select the correct answer using the code given below.

Improve the bracketed part of the sentence.

She (has fallen out with) the boy she was supposed to marry.

How much longitude does the Earth move in an hour?

First Indian woman to participate in Olympics?

What do eukaryotic cells have that prokaryotic cells do not?

Select the antonym of

veracity

Tikka disease is related with the crop: