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NEET2008ZoologyEvolutionActual

Thorn of Bougainvillea and tendril of Cucurbita are examples of

Options

  1. Aanalogous organs
  2. Bhomologous organs
  3. Cvestigial organs
  4. Dretrogressive evolution

Correct answer

B. homologous organs

Step-by-step 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. The analogous organs have almost similar appearance and perform the same function but these develop in totally different groups and are totally different in their basic structure and developmental origin. The phyllode of Ruscus or cladod

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