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Planaria, Insects, Octopus and Vertebrates All Have Eyes. Can We Group Eyes of These Animals Together to Establish a Common Evolutionary Origin? Justify Your Answer. - Science

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Planaria, insects, octopus and vertebrates all have eyes. Can we group eyes of these animals together to establish a common evolutionary origin? Justify your answer.

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Solution

The eyes seen in Planaria, insects, octopus and vertebrates vary greatly in their structure. These organisms can be used for studying the evolution of eyes as the eye of Planaria is simple without lens, insects have compound eyes and vertebrates have highly specialised eyes; however, all of them perform same function, that is, vision. Thus, a common  evolutionary origin can be established on the basis of eyes.

Concept: Evolution by Stages
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