Biology·MCQ Practice
Plant Growth Regulators — MCQ Practice
NEET UG
Updated 22 Mar 2026
Interactive MCQ Practice
Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 6 questions available.
Q1easy
Which of the following plant growth regulators is a gaseous hormone and is primarily involved in fruit ripening?
Q2medium
Which of the following pairs of plant hormones are antagonistic in their effects on seed dormancy?
Q3easy
Which of the following is a synthetic auxin used as a herbicide to kill dicotyledonous weeds?
Q4medium
Which of the following plant hormones is responsible for delaying senescence in leaves and promoting lateral bud growth?
Q5medium
Which of the following is NOT a physiological effect of Gibberellins?
Q6hard
The 'triple response' observed in dicot seedlings to mechanical stress is mediated by which plant hormone?