NEET Botany Plant Growth and Development Questions Solved

AIIMS - 2017

Which of the following plant growth hormone increase the yield of sugar by increasing the length of stem in sugarcane?
(a) Cytokinin
(b) Ethylene
(c) Gibberellic acid
(d) Auxin

Audio Explanation:


(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.

Difficulty Level:

  • 9%
  • 6%
  • 80%
  • 7%
Crack NEET with Online Course - Free Trial (Offer Valid Till September 22, 2019)