Question
XYZ system of hybrid seed production in wheat was
proposed by:Solution
The principle of the XYZ system was published by Driscoll (1972). It uses an addition chromosome carrying a gene for pollen fertility and a gene for a phenotype marker – blue coloured aleurone layer.
Train A running at speed of 54 km/hr crosses a platform having twice the length of train in 12 sec. Train B whose length is 240m crosses same platform i...
A train travelling at the speed of 72 km/hr crosses another train, having 60 meters less length and travelling in opposite direction at the speed of 54 ...
Train A running with a sped of 90 km/h crosses a vertical pole in 12 seconds. Speed of train A is 5 m/s less than speed of train B, and length of train ...
Two trains approach each other at 24 kmph and 31 kmph from 2 places 220 km apart. After how many hours they will meet?
Two trains of same length are running in parallel tracks in the same direction with speed 40 km/hr and 70 km/hr respectively. The latter completely cros...
- Length of a train, whose speed is 48 km/h, is 240 metres. Find the time taken (in seconds) by train to cross a bridge of length 360 metres.
A train 200 m long crosses a platform 250 m long in 18 seconds. The speed ratio of this train to another is 5:7. What is the length of the other train i...
Train ‘A’ running with a speed of 126 km/hr can cross a standing goods train of 6 times its length in 30 seconds. Find the time taken by 200 metres ...
Train P travelling at 55 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 35 km/hr in 14 seconds...
Two poles are positioned at a certain distance from each other. A train traveling at a speed of 90 km/hr passes the first pole in 5 seconds and reaches ...
