ibps-so 2016 · Question 323 of 394

A wheat development note being prepared for the farmers' clubs of a district of the north-western plains has to state the temperature band within which the crop grows best, because the sowing calendar advised to the borrowers is built backwards from it. The note records that the crop germinates and tillers in the cool of the early rabi season, that grain lling must be completed before the hot westerly winds set in, and that every degree of temperature above the optimum during grain lling shortens the lling period and shrivels the grain. The technical cell has returned an earlier draft which put the optimum in the low thirties, pointing out that such a band belongs to a tropical kharif cereal and not to wheat, and that the same note elsewhere gives the ideal minimum for the crop as 3 to 5 degrees Celsius. The optimum temperature for the growth of the wheat crop is

1. A10 to 15°C
2. B15 to 18°C
3. C20 to 25°CCorrect
4. D27 to 32°C
5. E30 to 35°C