The following diagram shows the relationships between certain types of organisms. The red lines represent a common ancestor that was the first organism to have the trait listed. For example, sea stars do not have spinal cords, but the organisms that come after do have a spinal cord.Ray fish have spinal cords and jaws, but they do not have bony skeletons. Which of the organisms in the diagram is most closely related to ray fish? A. lamprey B. shark C. gecko D. sea star

Which example of similar structures indicates that the species are related?A.Fins of sharks and penguinsB.Forelimbs of bats and dogsC.Webbed feet of frogs and ducksD.Wings of birds and insects

Sharks belong to which class of Vertebrata?Group of answer choicesActinopterygiiAgnathaOsteichthyesChondrichthyes

Consider the image above. What can be conclude about Chondrichthyes (cartilagenous fish) and Osteichthyes (bony fish)?Group of answer choicesThey shared a common ancestor (albeit a long time ago)They both have lob-like finsThey are equally related to the amniote groupNone of their modern day species are aquatic

Chordates that have jaws, vertebrae, gills, and fins are calledMultiple choice question.fishes.lancelets.hagfishes.lampreys.

If we were to compare the brains of a fish, a bird, and a human, which of the following structures would appear to be the most similar among the three different brains?Group of answer choicesCentral SulcusOlfactory bulbBrain StemCerebrum