1936: Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called

(a) Keystone species
(b) Allopatric species
(c) Sympatric species
(d) Threatened species
1937: In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the

1. decomposer microorganisms to the surface.

2. nutrients to the surface.

3. bottom-dwelling organisms to the surface.

Which of the statements given above is/are correct ?

(a) 1 and 2
(b) 2 only
(c) 2 and 3
(d) 3 only
1938: Urea is prepared by the chemical reaction of:

(a) Ammonia and Carbon dioxide

(b) Ammonium sulphate and calcium chloride

(c) Acetamide and ethyl alcohol

(d) Chlorine and water
1939: The following news item appeared in a National daily dated 1-12-1999:

.....Parliament today rejected a Bill to grant women the right to vote and stand for office in parliamentary elections, by a margin of 32 to 30.

The National Assembly was split between liberal, pro-government and Shiite Muslim deputies who were in favour of women's rights, while the opposition camp grouped Sunni Muslim fundamentalists and tribal MPs. A total of 64 MPs and Ministers were present, of whom two abstained.

The Parliament referred to in this quotation is that of

(a) Kuwait
(b) Iran
(c) Bahrain
(d) Saudi Arabia
1940: What will follow if a Money Bill is substantially amended by the Rajya Sahbha?

(a) The Lok Sabha may still proceed with the Bill, accepting or not accepting the recommendations of the Rajya Sabha

(b) The Lok Sabha cannot consider the Bill further

(c) The Lok Sabha may send the Bill to the Rajya Sabha for reconsideration

(d) The President may call a joint sitting for passing the Bill