Questions

Rearrange the parts of the sentence in correct order.

The arbitration
P - ­dented China's interests
Q - ­in multiple ways
R - ­award has, nevertheless,

Which of the following is used in making perfumes as well as flavouring agents?

Improve the bracketed part of the sentence.

Practically (every) part of the coconut tree is used by man.

Rearrange the parts of the sentence in correct order.

This may be essential at

P-where the market fails to deliver
Q-swath of an economy
R-times, but there is a wide

Rearrange the parts of the sentence in correct order.

In developing countries today

P : urban health conditions

Q : than rural health conditions

R : seem to be better

Which of the following crop is major foreign exchange earner for Sri Lanka?

Rearrange the parts of the sentence in correct order.

Stem cells

P : are being researched

Q : forming blood vessels

R : especially for

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.

Sub Sharan Africa has lost how many black rhino genetic lineages in 200 years?