Experiments Have Shown That When a Short-Day Plant (SDP) and a Long-Day

Multiple Choice

Experiments have shown that when a short-day plant (SDP) and a long-day plant (LDP) are grafted together and the SDP is exposed to a photoperiod that causes it to flower, the LDP flowers as well.This observation supports the theory that a specific flower-initiating hormone is produced in plants.A properly controlled experiment would repeat the grafting procedure but

A) graft together the two plants and not induce the SDP.
B) omit the LDP.
C) omit the SDP.
D) shorten the SDP photoperiod.
E) include an LDP photoperiod.