Tendrils and passiflora are modified stem , tendrils in pea are modified lealets and thrones of bougainvillea are modified stem . the homologous organs are of
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The tendril of pea is a modified leaf or leaflet while that of passion-flower is a modified ... Hygrophila, prune and the bigger thorns of Ulex are all modified axillary buds or stems.
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. Thorns of Bougainvillea and tendrils of Cucurbita are homologous organs. These are modified branches and are axillary in position. It means axillary branches in Bougainvillea are modified into thorns for protection from burrowing animals and in Cucurbita into tendrils for climbing.
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