The thorns and tendrils of Bougainvillea and Cucurbita
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a
represent analogy.
b
represent homology.
c
are terminal bud modifications.
d
are vestigial structures.
answer is B.
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Detailed Solution
The thorn and tendrils of Bougainvillea and Cucurbita represent homology.Homology is based on divergent evolution. The thorn and tendrils of Bougainvillea and Cucurbita are axillary bud modifications. Thorns help in defense and tendrils for support (not vestigial).