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Start learning 50% faster. Sign in nowFor each resistance gene in the host there is a corresponding gene for avirulence in the pathogen conferring resistance and vice-versa. This gene for gene hypothesis was given by HH Flor in 1946 on flax rust (Linseed rust) caused by Melampsora lini.
Train 'K' leaves at 6:00 PM on Saturday from Ahmedabad station and reaches Surat station at 8:00 AM the next day, while train 'L' leaves at 7:00 PM on S...
Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. What is the time taken by the ...
There are two trains A and B. A start from point X at 6 AM towards point Y. Another train B starts at 7 AM from point X. If they meet at 8 AM and...
Train ‘A’ running with a speed of 19.8 km/hr can cross a standing goods train of 4 times its length in 40 seconds. Find the time taken by 250 metres...
Time is taken by two trains running in opposite directions to cross a man standing on the platform in 27 seconds and 17 seconds respectively. It took 21...
A freight train requires 17.6 seconds to pass a stationary person and 28 seconds to traverse a 260-meter-long tunnel. Simultaneously, a motorcycle can c...
Train B whose length is (l+40) metre can cross a pole in 20 seconds. Train A can cross 168 metre long platform in 44 seconds. The length of train A is 8...
A 160 m long train crosses another 280 m long train running in the opposite direction in 11 seconds. If the shorter train crosses a pole in 8 seconds, w...
