Which of the following plant growth hormone increase the yield of sugar by increasing the length of stem in sugarcane?
(c) Gibberellic acid
(c) Gibberellic acid is also known as weak acidic plant growth regulator. It increases the yield of sugar by increasing the length of stem in sugarcane.
It is the only plant growth hormone that elongates the internodes to increase the height of the plant by causing an increase in the length of axis.