Question

Select ALL the correct answers. Based on these images, what can you say about the tentacles of an octopus and the limbs of a lizard? Group of answer choices They’re homologous structures. They’re neither homologous nor analogous structures. They’re neither vestigial nor homologous structures. They’re vestigial structures. They’re analogous structures.

Answer 1

Tentacles of an octopus as well limbs of a lizard are analogous structures.

Analogous structures or organs perform the same function in different organisms that bear no resemblance to each other anatomically. Analogous structures are formed as a result of convergent evolution, i.e. different structures evolving for the similar function and thus having similarity. Tentacles of an octopus as well as limbs of a lizard are used for the similar function, i.e. locomotion in this case.

On the other hand, homologous structures result from divergent evolution. Homologous organs contain a similar basic structure but perform distinct functions in different organisms.

To learn more about Homologous organs here

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