Answer:
Phyllotaxy is the pattern of arrangement of leaves
on the stem or branch. This is usually of three types - alternate, opposite and
whorled.
(i) In alternate phyllotaxy, a single leaf arises
at each node in alternate manner, as in China rose, mustard and sunflower
plants.
(ii) In opposite type of phyllotaxy, a pair of
leaves arise at each node and lie opposite to each other as in Calotropis and
guava plants.
(iii) If more than two leaves arise at each node
and form a whorl, it is called as whorled, as in Alstonia.
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