2716: The maturity of a river course is recognised by the presence of
(a) V-shaped valley
(b) Meanders
(c) Gorges
(d) High denudational power
2717: A and B are two fixed points in a field. A cyclist C moves such that ACB is always a right angle. In this context, which one of the following statements is correct?
(a) The path followed by the cyclist is an ellipse
(b) The path followed by the cyclist is a circle
(c) The path followed by the cyclist is an exponential curve
(d) This type of motion is not possible
2718: In the context of food and nutritional security of India, enhancing the 'Seed Replacement Rates' of various crops helps in achieving the food production targets of the future. But what is/are the constraint/ constraints in its wider/greater implementation?
1. There is no National Seeds Policy in place.
2. There is no participation of private sector seed companies in the supply of quality seeds of vegetables and planting materials of horticultural crops.
3. There is a demand-supply gap regarding quality seeds in case of low value and high volume crops.
Select the correct answer using the code given below.
(a) 1 and 2
(b) 3 only
(c) 2 and 3
(d) None
2719: What explains the eastward flow of the equatorial counter-current?
(a) The Earth's rotation on its axis
(b) Convergence of the two equatorial currents
(c) Difference in salinity of water
(d) Occurrence of the belt of calm near the equator
2720: Consider the following statements:
1. The Nuclear Security Summits are periodically held under the aegis of the United Nations.
2. The International Panel on Fissile Materials is an organ of International Atomic Energy Agency.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2