MCQ on Plant Hormones

Plant Hormone MCQ: Plant hormones, also known as phytohormones, are chemical substances that regulate various physiological processes in plants. They include auxins, gibberellins, cytokinins, ethylene, and abscisic acid. These hormones influence growth, development, flowering, fruiting, and responses to environmental stimuli. This is an MCQ on Plant Hormones.

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$. Auxins: Physiological Effects MCQ

$. Cytokinins: Physiological Effects MCQ

$. Abscisic Acid (ABA): Physiological Effects MCQ

$. Ethylene: Physiological Effects MCQ

$. Gibberellins: Physiological Effects MCQ

1. 
Which plant hormone is primarily responsible for cell elongation and apical dominance?

2. 
Which plant hormone promotes seed dormancy and helps plants withstand drought?

3. 
Which plant hormone is known for its role in fruit ripening and leaf abscission?

4. 
Which hormone is primarily involved in stimulating cell division in plant roots and shoots?

5. 
Which plant hormone can break seed dormancy and promote germination?

6. 
Which hormone is produced in response to stress and helps close stomata to reduce water loss?

7. 
Which hormone is primarily involved in phototropism, the growth of plants towards light?

8. 
Which plant hormone promotes the elongation of internodes in stem growth?

9. 
Which hormone is responsible for the formation of root nodules in legumes?

10. 
Which plant hormone can delay the aging of leaves and flowers?

11. 
Which hormone is involved in the triple response of seedling growth, including the inhibition of stem elongation?

12. 
Which hormone can induce the formation of adventitious roots?

13. 
Which hormone is known to regulate the opening and closing of stomata?

14. 
Which plant hormone is involved in bolting, the rapid elongation of a floral stalk?

15. 
Which hormone works antagonistically to auxin in apical dominance by promoting lateral bud growth?

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