Question

What is the meaning of 'Palvini' cell

Answer 1

Pulvini may be present at the base or apex of the petiole or where the leaflets of a compound leaf are inserted into the rachis. They consist of a core of vascular tissue within a flexible, bulky cylinder of thin-walled parenchyma cells. A pulvinus is also sometimes called a geniculum.

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Answer 2

• Answer •

"A Swelling present at the base of petiole is known as palvini ."

Extra information :

• It plays an important role in rigidity of leaf.

• Commonly occurs in the members of Fabaceae family.

• Eg : Base of Mango leaf .

• "Aquaporins" are present in the Vacuole membrane of pulvini..