Which of the following is used to sprout the potato in winter?

Many discoveries in science have been accidental. This is true for plant hormones also. Can you justify this statement by giving an example? Also,what term is used for such accidental findings?

Bakanae disease was due to

Gibberellic acid is a product of

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

Which phytohormone is useful for leaf expansion in leafy vegetables?