What did the early experiments on photoperiodism demonstrate?

The answer is it signals transmitted downward. Early research on photoperiodism dealt with the flowering period of plants. They precise short-day (late summer and fall, less than about 16 hours), long-day (summer, lengthier than 9 to 16 hours), day-neutral (any length), and intermediate-day (not classifiable as either long-day or short-day) plants in qualified to their photoperiod.

hello! my name is zalgo and i am here to you out on this amazing day. the second president of the united states would be john adams. born october 30th, 1735 in braintree, ma. died july 4th, 1826 at the age of 90 in quincy, ma.

i hope that this ! : p

"stay and stay proud! " - zalgo

(by the way, can you mind marking me as brainliest? i' greatly appreciate it! you! )

adopted the practice of proskynesis, a persian court custom that involved bowing down and kissing the hand of others, depending on their rank.