The chemical nature of gibberellins is

The phytohormone that induces cell elongation is known to be produced by a fungus. The asexual stage of this fungus is called

Gibberellins can promote seed germination because of their influence on

Genetic dwarfness can be overcome by treating with

The hormone which can replace long days and low temperature requirement for flowering in some plants is

Which of the following are effects of gibberellins?
$(a)$ It helps overcome apical dominance.
$(b)$ It delays senescence,thus fruits can be left on the tree longer.
$(c)$ Increase in length of axis.
$(d)$ It is used to speed up the malting process in brewing industries.
$(e)$ It induces parthenocarpy.
$(f)$ Promotes female flowers in cucumbers.