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Thorn of Bougainvillea and tendril of Cu...

Thorn of Bougainvillea and tendril of Cucurbita are examples of `:`

A

analogous organs

B

homologous organs

C

vestigial organs

D

retrogressive evolution

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**Step-by-Step Solution:** 1. **Identify the Structures**: The question asks about the thorn of Bougainvillea and the tendril of Cucurbita. We need to analyze these structures to understand their nature. 2. **Understand the Origin**: Both the thorn of Bougainvillea and the tendril of Cucurbita are modifications of the stem. This indicates that they share a common origin. 3. **Analyze the Functions**: - The thorn of Bougainvillea serves a protective function, helping to deter herbivores from eating the plant. - The tendril of Cucurbita, on the other hand, is used for climbing and support, allowing the plant to grow upwards. 4. **Determine the Relationship**: Since both structures originate from the same part of the plant (the stem) but serve different functions, they exemplify a concept in evolutionary biology. 5. **Conclude the Classification**: The thorn of Bougainvillea and the tendril of Cucurbita are examples of homologous structures. Homologous structures are those that have a common evolutionary origin but have diverged in function. **Final Answer**: Thorn of Bougainvillea and tendril of Cucurbita are examples of homologous structures. ---
**Step-by-Step Solution:** 1. **Identify the Structures**: The question asks about the thorn of Bougainvillea and the tendril of Cucurbita. We need to analyze these structures to understand their nature. 2. **Understand the Origin**: Both the thorn of Bougainvillea and the tendril of Cucurbita are modifications of the stem. This indicates that they share a common origin. 3. **Analyze the Functions**: - The thorn of Bougainvillea serves a protective function, helping to deter herbivores from eating the plant. ...
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{:("Convergent evolution","Divergent evolution"),((1)"Bones of forelimbs of vertebrates","Wings of butterfly and birds"),((2)"Thorns of Bougainvillia and tendrils of Cucurbita","Eyes of Octopus and Mammals"),((3)"Eyes of octopus and mammals","Bones of forelimbs of vertebrates"),((4)"Thorns of Bougainvillia and tendrils of Cucurbita","Wings of butterflies and birds"):}

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Thorn of Bougainvillea is modified