Which among the given animals does not have backbone?
According to scientific facts all reptiles have backbone . If they didn't have a backbone they couldn't crawl .
According to Known Scientific facts options a) b) and c are non vertebrate so why are Options a and b are not part of right answer? At times quality of questions raise a doubt about due diligence being put in articulating the questions .
the answer is c crickets donot have backbone. fish obviously has backbone snakes have flexible backbone(cartilage) and all reptiles have backbone