Which of the following is the modification of leaf?

Swollen lower end of leaf stalk is

A phyllotaxy with two or more leaves present on the same node is

How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (oleander) have opposite phyllotaxy?

Leaves of dicotyledon plants generally exhibits

Rachis is present in