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

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Detailed Solution

The answer is true.

Planaria, creepy crawlies, octopuses, and vertebrates all have eyes. Hence, we group these animals together to establish a common evolutionary origin.

The eyes in Planaria, creepy crawlies, octopuses, and vertebrates differ incredibly in their structure. Planaria has simpler eyes above the head, creepy crawlies have compound eyes on either side of the head but in front, octopus have large eyes on either side of the head and are colourblind, and vertebrates have highly specialised eyes.

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