Which one hastens flowering in plants

Which one can induce flowering in long day plants ?

Which one can induce flowering in long day plants ?

Which one can induce flowering in long day plants ?

Which one of the following plant shows unusual flowering phenomenon?

Which one of the following plant shows unusual flowering phenomenon?

If hybridization is made between two Mirabillis jalapa plants, one pure red flowering plant crossed with another white flowering plant. In F1 generation-

Which of the following is not related with flowering plants ?