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B
Amplexicaul
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C
Winged
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D
Sheathing leaf base
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Solution
The correct option is A Pulvinus A swollen leaf base is called as Pulvinus. This type of leaves are seen in Fabaceae family. The swelling results due to change in the turgor pressure. Night closure movement of legume leaves shows this pulvinar movement. The pulvinus protects the young axillary bud.