Define Phyllotaxy . What is Phyllotaxy in biology
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Phyllotaxy (phyllotaxis) is the mode of arrangement of leaves, scales, or bracts with flowers along the plant stem. Phyllotaxy research deals with the study of biological pattern formation (morphogenesis); it answers questions such as what the shoot apical meristem (SAM) does and how it does it.
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it is the pattern in which the leaves are arranged on the stem or its branches is called phyllotaxy it is of three types
alternate phyllotaxy = single leaf is present at each node in an alternate fashion eg : china rose , mustard , sunflower,
opposite phyllotaxy = a pair of leaves arise from each node on oposote side . the leaves lie opposite to each other at each node . eg: guava , calotropis .
whorled phyllotaxy = more than two leaves arise from each node eg: alstonia , nerium.
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