1516: In a civilised urban society, what makes people live together?
(a) Patriotism
(b) Religion
(c) Culture
(d) Law
1517: The theory of "Jumping Genes" was propounded by
(a) Gregor Johann Mendel
(b) Thomas Hunt Morgan
(c) Barbara McClintock
(d) Watson and Crick
1518: Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine ?
(a) Malaria is caused by several species of Plasmodium
(b) Man does not develop, immunity to malaria during natural infection
(c) Vaccines can be developed only against bacteria
(d) Man is only an intermediate host and not the definitive host
1519: The satellites of which one of the following countries have helped in the preparation of a detailed and complete map of Antarctica ?
(a) Canada
(b) France
(c) Russia
(d) USA
1520: Heavy rainfall affects soil by:
(a) Increasing its acidity
(b) Increasing its alkalinity
(c) Reducing its fertility
(d) None of these