Thorns of Bougainvillea and tendrils of Cucurbita are examples of:

Homologous organs

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Analogous organs

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Vestigial organs

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Retrogressive evolution

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Solution

The correct option is A Homologous organs
Thorns of Bougainvillea and tendrils of Cucurbita are homologous structures. A homologous structure is an
organ, system, or body part that shares a common ancestry in multiple organisms. They arise from the axillary buds, but they perform different types of functions. The thorn is for providing protection against the grazing animals. The tendrils helps in providing support while climbing.

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