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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Bougainvillea belong to family…………

    Question: Bougainvillea belong to family…………

    Options:

    Rosaceae
    Nyctaginaceae
    Combretaceae
    None

    ✅Explanation: Bougainvillea is a genus of thorny ornamental vines, bushes, or trees. It belongs to the Nyctaginaceae family, also known as the four o'clock flower family.

    📌 Other Options Explanations:
    -Rosaceae: The rose family, includes plants like roses, apples, and strawberries.
    -Combretaceae: This family includes trees, shrubs, and lianas, known for their showy flowers.

    🔑Key Points:
    -Homologous organs are defined as organs that originate from the same origin but perform different tasks.
    -Examples of homologous organs include the thorns of bougainvillea and the tendrils of cucumbers.
    -Cucurbita tendrils and Bougainvillea thorns are both modified axillary buds, their functions are different from one another.
    -The thorn serves as a defense against grazing animals. The tendrils aid in providing support when climbing. They are anatomically similar but vary in function.
    -The inflorescence consists of large colourful sepal-like bracts which surround three simple waxy flowers, gaining popularity for the plant as an ornamental.
    -The plant is named after explorer Louis Antoine de Bougainville (1729-1811), after it was documented on one of his expeditions.

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