A) analogous organs
B) homologous organs
C) vestigial organs
D) retrogressive evolution
Correct Answer: B
Solution :
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.
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