Question

Why are thorn of Bougainvillea plant and a tendril of Passiflora plant considered homologous organs?

Answer 1

The thorn of Bougainvillea and the tendril of Passiflora perform different functions but have a similar basic structure, which is why they are homologous.

Answer 2

Answer:

The thorn of Bougainvillea plant and a tendril of Passiflora plant are considered homologous organs because they both help the plant in climbing and have the same basic structure.  

Explanation:

The thorn of Bougainvillea plant and a tendril of Passiflora plant both arise from the axillary position. They both are the modified branches, so having the same function the ‘thorn of Bougainvillea plant’ and a tendril of Passiflora are considered as the homologous organs.