Photoperiodism is a response that certain plants have to decreases or increases in the amount they receive in a day (which is normally produced by seasonal movement of the su â¦ n-longer and shorter days).  Some plants require short days to initiate flower formation, while others long day length initiates flowering.
October 24, 1945. Akershus, Norway. Vidkun Quisling, (born July 18, 1887, Fyresdal, Nor.âdied Oct. 24, 1945, Akershus Fortress, Oslo) Norwegian army officer whose collaboration with the Germans in their occupation of Norway during World War II established his name as a synonym for âtraitor.â.
Jethro Tull, (born 1674, Basildon, Berkshire, Eng.âdied Feb. 21, 1741, Prosperous Farm, near Hungerford, Berkshire), English agronomist, agriculturist, writer, and inventor whose ideas helped form the basis of modern British agriculture. Tull trained for the bar, to which he was called in 1699. But for the next 10 years he chose to operate his fatherâs farm in Oxfordshire, on which about 1701 he perfected a horse-drawn seed drill that economically sowed the seeds in neat rows.