Question
Biology Question on plant growth and development
Internodes elongation is due to
A
gibberellin
B
auxin
C
cytokinin
D
abscisic acid
Answer
gibberellin
Explanation
Solution
The correct answer is A:Gibberellin
Elongation of internode is caused by Gibberellin. Gibberellin is a class of hormone that helps in cell elongation. They promote the synthesis of
proteins that weakens the cell wall thus allowing them to grow.