Sunday, June 5, 2011

blog 15

Compare two of the organisms that we have dissected Discuss at least 2 similarities and 3 differences

In class, two organisms we dissected before are the fish and the squid. One difference is that squids are related to cephlapods which don't have a skeleton structure at all while a fish does that a skeletion structure. They have an endoskeleton(bones) and have scales outside. Also on the external appeareance fish mainly have fins while squids do not.However both do have eyes ans in their interior atanomy they both similarily have gills, brain, kidney,stomach, and a heart. Both also have a marine like lifestyle and reproduce by the eggs developed in them proving that they are not mammals. Another difference that can be displayed externally are the tentacles on their arms squids use to move and the fins fishes use to swim.

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