Which of the following provides the best comparison between reptiles and fish? A) They both have scales, but fish are ectothermi
c, and reptiles are endothermic . B) They are both ectothermic, but fish have gills, and reptiles have lungs. C) They are both vertebrates, but fish have three-chambered hearts, and reptiles have two-chambered hearts. D) They both lay eggs, but fish are invertebrates, and reptiles are vertebrates.
Answer - B Fish and reptiles both are ectothermic but fish have gills and reptiles have lungs. Ectothermic organisms do not have an internal mechanism of regulating their body temperature and are dependent on their atmosphere for temperature regulation. Fish, reptiles and invertebrates are examples of ectothermic organisms.
