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Thorn of Bougainvillea and tendril of Cucurbita are examples of:

  1. A
    Retrogressive evolution
  2. B
    Analogous organs
  3. C
    Homologous organs
  4. D
    Vestigial organs

Solution & Step-by-step Explanation

Both the thorn and the tendril arise from the axillary bud, meaning they share a common structural origin but have different functions (protection vs. climbing). This is homology.

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Thorn of Bougainvillea and tendril of Cucurbita are examples of:
A
Retrogressive evolution
B
Analogous organs
C
Homologous organs
D
Vestigial organs

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