Biology

Plant Growth Regulators

Biology·MCQ Practice

Cytokinins, Ethylene and ABA — MCQ Practice

NEET UG
Version 1Updated 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 hormones is a gaseous substance primarily involved in fruit ripening and senescence?

Q2medium

Which of the following is NOT a physiological effect of cytokinins?

Q3easy

Abscisic Acid (ABA) is often referred to as the 'stress hormone' due to its role in:

Q4medium

Which of the following pairs of plant hormones are generally antagonistic in their effects on seed dormancy and germination?

Q5medium

In plant tissue culture, if the goal is to induce shoot differentiation from a callus, which of the following hormone ratios would be most appropriate?

Q6hard

The 'Richmond-Lang effect' is associated with which plant hormone and what does it describe?

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