MCQ on Gibberellins (Plant Hormone)




Gibberellins are plant hormones that act like growth spurts. They promote stem elongation, seed germination by breaking dormancy, and flowering in some plants. Imagine them as tiny giants stretching plants upwards and coaxing them to bloom. This is an MCQ on Gibberellins Structure and Physiological Effects.

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1. 
Which of the following is a primary physiological effect of gibberellins in plants?

2. 
Where are gibberellins primarily synthesized in plants?

3. 
What is the main role of gibberellins in plant growth and development?

4. 
Which of the following is a commercial application of gibberellins in agriculture?

5. 
Which hormone often works antagonistically with gibberellins to regulate plant growth and development?

6. 
How do gibberellins promote stem elongation in plants?

7. 
Which of the following is NOT a physiological effect of gibberellins?

8. 
What is the primary role of gibberellins in seed germination?

9. 
Which of the following is a mechanism by which gibberellins regulate gene expression?

10. 
Which plant response involves the movement of gibberellins towards the lower side of the stem, resulting in curvature towards light?

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MCQ on Gibberellins

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