4476: The tropical deciduous trees shed their leaves in summer:
(a) Leaves get dried up due to the excessive heat
(b) To prevent excessive loss of water through transpiration
(c) Because rainfall is inadequate
(d) Days are longer
4477: Who among the following discovered heavy water?
(a) Joseph Priestley
(b) Heinrich Hertz
(c) H. C. Urey
(d) G. Mendel
4478: Which of the following determines the protein quality of food?
(a) Protein amalgamation
(b) Fibre content
(c) Amino acids mixture
(d) Vegetable or animal origin
4479: Consider the following pairs: National Park River flowing through the Park
1. Corbett National Park : Ganga
2. Kaziranga National Park : Manas
3. Silent Valley National Park : Kaveri
Which of the above pairs is/are correctly matched?
(a) 1 and 2
(b) 1 and 3
(c) 3 only
(d) None
4480: Southeast Asia has captivated the attention of global community over space and time as a geostrategically significant region. Which among the following is the most convincing explanation for this global perspective ?
(a) It was the hot theatre during the Second World War
(b) Its location between the Asian powers of China and India
(c) It was the arena of superpower confrontation during the Cold War period
(d) Its location between the Pacific and Indian oceans and its pre-eminent maritime character