Question

Thorn of Bougainvillea and tendril of Cucurbita are examples of
a) vestigeal organs

b) retrogressive evolution

c) homologous organs

d) analogous organs

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Answer 1

Answer:

Thorns of Bougainvillea and tendrils of Cucurbita are homologous organs. These are modified branches and are axillary in position. It means axillary branches in Bougainvillea are modified into thorns for protection from burrowing animals and in Cucurbita into tendrils for climbing.

Answer 2

Answer:

option (b) is correct

Explanation:

homologous organs