Pulvinus tissues are present at:
Correct answer: C. Leaf-base
- A. Leaf-tip
- B. Leaf-margin
- C. Leaf-base
- D. Middle-vein
Explanation
Pulvini may be present at the base or apex of the petiole, they consist of a core of vascular tissue within a flexible, bulky cylinder of thin walled parenchyma cells. Therefore the correct answer will be C.
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About Plant Growth Regulators
Plant growth regulators are chemical messengers that control growth, development and responses to the environment. The topic covers auxins, gibberellins, cytokinins, abscisic acid and ethylene, including cell elongation, apical dominance, tropisms, seed germination, dormancy, fruit ripening and leaf fall, with growth promoters distinguished from inhibitors.
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