Explain any two types of phyllotaxy. Give example of each type.

Phyllotaxy is the pattern of arrangement of leaves on the stem or branch. It is divided into three types:

 Alternate, opposite and whorled phyllotaxy. 

(a) Alternate phyllotaxy: In this type, a single leaf arises at each node in alternate manner. E.g. China rose, mustard and sun flower plants. 

(b) Opposite phyllotaxy: Plants with opposite phyllotaxy have two leaves arising from the node in opposite directions. E.g. Calotropis and guava plants 

(c) Whorled phyllotaxy: Plants with whorled phyllotaxy have three or more leaves arising from the node, which form a whorl. E.g. Alstonia.