. Insects, octopus, planaria and vertebrates possess eyes
Can we group these animals together on the basis of eyes that they possess? Justify your answer giving reason.
Ans. Insects, octopus, planaria and vertebrates posses eyes but these animals can not be put together on the basis of eyes because the structure of eyes in each of there organisms is different which suggests their separate evolutionary origins. Thus all these animals are put in different groups.